--- title: "CVE-2020-27223: Inefficient Algorithmic Complexity | CubePath" description: "In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers…" language: en source: https://cubepath.com/security/cve/CVE-2020-27223 --- # CVE-2020-27223: Inefficient Algorithmic Complexity | CubePath ## Description In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values. Official description from the CVE record, published by eclipse. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2020-27223) ## Key data ### CVSS 3.1 Medium 5.2 Score published by eclipse in the CVE record. CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H | Metric | Value | What it means | | ---------------------- | --------- | ------------------------------------------------------------------------------------- | | Attack vector | Adjacent | The attacker needs to be on the same shared network segment or a closely related one. | | Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. | | Privileges required | Low | A basic user account is needed. | | User interaction | Required | A user has to do something first, such as opening a file or following a link. | | Scope | Unchanged | The impact stays within the vulnerable component. | | Confidentiality impact | None | No effect on the secrecy of data. | | Integrity impact | None | No effect on the trustworthiness of data. | | Availability impact | High | Serious or total effect on availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.78031 (78.0% probability) Percentile 99.6% Scores of Nov 10, 2026 Model v2026.06.15 ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-407](https://cwe.mitre.org/data/definitions/407.html) Inefficient Algorithmic Complexity ## Affected products Products listed in the CVE record, as the CNA published them. - Eclipse Jetty - affected: 9.4.6.v20170531 up to before unspecified - affected: unspecified up to 9.4.36.v20210114 - affected: 10.0.0 - affected: 11.0.0 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [bugs.eclipse.org/bugs/show\_bug.cgi?id=571128](https://bugs.eclipse.org/bugs/show%5Fbug.cgi?id=571128) - [github.com/eclipse/jetty.project/security/advisories/GHSA-m…](https://github.com/eclipse/jetty.project/security/advisories/GHSA-m394-8rww-3jr7) - [\[karaf-user\] 20210301 Re: Jetty security defect](https://lists.apache.org/thread.html/r5612dc69e1f79c421faf9764ffbc92591e2a69ea417c04cba57f49ea%40%3Cuser.karaf.apache.org%3E) (lists.apache.org) mailing-list - [\[kafka-jira\] 20210302 \[GitHub\] \[kafka\] dongjinleekr commented on pull request #10245: KAFKA-12400: Upgrade jetty to fix CVE-2020-27223](https://lists.apache.org/thread.html/rd8e24a3e482e5984bc8c5492dc790413e4fdc1234e3debb94515796b%40%3Cjira.kafka.apache.org%3E) (lists.apache.org) mailing-list - [\[kafka-dev\] 20210302 \[jira\] \[Created\] (KAFKA-12400) Upgrade jetty to fix CVE-2020-27223](https://lists.apache.org/thread.html/r35ab810c0f3016b3fd3a3fa9088a2d2781b354a810780ce74d022b6c%40%3Cdev.kafka.apache.org%3E) (lists.apache.org) mailing-list - [\[kafka-jira\] 20210302 \[GitHub\] \[kafka\] dongjinleekr opened a new pull request #10245: KAFKA-12400: Upgrade jetty to fix CVE-2020-27223](https://lists.apache.org/thread.html/r2c2c7b2971360fb946bbf062c58d7245927dd1ce9150fc9987f65409%40%3Cjira.kafka.apache.org%3E) (lists.apache.org) mailing-list - [\[kafka-jira\] 20210302 \[jira\] \[Created\] (KAFKA-12400) Upgrade jetty to fix CVE-2020-27223](https://lists.apache.org/thread.html/r1b7ed296a865e3f1337a96ee9cd51f6d154d881a30da36020ca72a4b%40%3Cjira.kafka.apache.org%3E) (lists.apache.org) mailing-list - [\[druid-commits\] 20210302 \[GitHub\] \[druid\] a2l007 opened a new pull request #10937: Upgrade jetty to latest version](https://lists.apache.org/thread.html/rc052fd4e9e9c01bead74c0b5680355ea5dc3b72d46f253cb65d03e43%40%3Ccommits.druid.apache.org%3E) (lists.apache.org) mailing-list - [\[kafka-jira\] 20210302 \[GitHub\] \[kafka\] ableegoldman commented on pull request #10245: KAFKA-12400: Upgrade jetty to fix CVE-2020-27223](https://lists.apache.org/thread.html/rdd6c47321db1bfe12c68a898765bf3b6f97e2afa6a501254ed4feaed%40%3Cjira.kafka.apache.org%3E) (lists.apache.org) mailing-list - [\[kafka-dev\] 20210302 \[jira\] \[Resolved\] (KAFKA-12400) Upgrade jetty to fix CVE-2020-27223](https://lists.apache.org/thread.html/ra47a26c008487b0a739a368c846e168de06c3cd118d31ecedafa679a%40%3Cdev.kafka.apache.org%3E) (lists.apache.org) mailing-list - [\[kafka-jira\] 20210302 \[jira\] \[Resolved\] (KAFKA-12400) Upgrade jetty to fix CVE-2020-27223](https://lists.apache.org/thread.html/r7fbdb7880be1566f943d80fbbeefde2115c086eba1bef3115350a388%40%3Cjira.kafka.apache.org%3E) (lists.apache.org) mailing-list - [\[kafka-commits\] 20210302 \[kafka\] branch 2.7 updated: KAFKA-12400: Upgrade jetty to fix CVE-2020-27223](https://lists.apache.org/thread.html/rff630ce92a4d1bb494fc1a3f9b57a3d60819b436505bcd8c6ccc713c%40%3Ccommits.kafka.apache.org%3E) (lists.apache.org) mailing-list - [\[kafka-commits\] 20210302 \[kafka\] branch 2.8 updated: KAFKA-12400: Upgrade jetty to fix CVE-2020-27223](https://lists.apache.org/thread.html/ra384892bab8c03a60613a6a9d5e9cae0a2b800fd882792a55520115e%40%3Ccommits.kafka.apache.org%3E) (lists.apache.org) mailing-list - [\[kafka-jira\] 20210302 \[GitHub\] \[kafka\] omkreddy closed pull request #10245: KAFKA-12400: Upgrade jetty to fix CVE-2020-27223](https://lists.apache.org/thread.html/r562a0cbc5c8cac4d000a27b2854a8ab1b924aa9dd45f8ffbea98e5ad%40%3Cjira.kafka.apache.org%3E) (lists.apache.org) mailing-list - [\[kafka-commits\] 20210302 \[kafka\] branch 2.6 updated: KAFKA-12400: Upgrade jetty to fix CVE-2020-27223](https://lists.apache.org/thread.html/re819198d4732804dc01fca8b5b144689a118ede49f6128968773595c%40%3Ccommits.kafka.apache.org%3E) (lists.apache.org) mailing-list - [\[activemq-gitbox\] 20210303 \[GitHub\] \[activemq\] ehossack-aws opened a new pull request #616: Upgrade to Jetty 9.4.38.v20210224](https://lists.apache.org/thread.html/r0e25cdf3722a24c53049d37396f0da8502cb4b7cdc481650dc601dbc%40%3Cgitbox.activemq.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210307 \[GitHub\] \[zookeeper\] ztzg opened a new pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r26d9196f4d2afb9bec2784bcb6fc183aca82e4119bf41bdc613eec01%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210307 \[GitHub\] \[zookeeper\] ztzg commented on pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r857b31ad16c6e76002bc6cca73c83358ed2595477e288286ee82c48d%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-issues\] 20210307 \[jira\] \[Updated\] (ZOOKEEPER-4233) dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r0b639bd9bfaea265022125d18acd2fc6456044b76609ec74772c9567%40%3Cissues.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-issues\] 20210307 \[jira\] \[Created\] (ZOOKEEPER-4233) dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/raa6d60b00b67c0550672b4f506f0df75b323dcd25cf574e91e2f2dff%40%3Cissues.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210307 \[GitHub\] \[zookeeper\] ztzg opened a new pull request #1624: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/rb79b62ac3085e05656e41865f5a7efcbdc7dcd7843abed9c5fe0fef8%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210307 \[GitHub\] \[zookeeper\] ztzg opened a new pull request #1625: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/rf6c2efa3137bc8c22707e550a1f9b80f74bca62b9c8a6f768f2c6b86%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-dev\] 20210307 \[jira\] \[Created\] (ZOOKEEPER-4233) dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r5b7cc6ac733e0b35816751cf45d152ae246a3f40e0b1e62b101c9522%40%3Cdev.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210308 \[GitHub\] \[zookeeper\] arshadmohammad commented on pull request #1624: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/re43768896273c0b5f1a03d7f0a9d370852074489d51825fdc0d77f0f%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-commits\] 20210308 \[zookeeper\] branch branch-3.5 updated: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r75ee2a529edb892ac59110cb3f6f91844a932c5034e16c8317f5668d%40%3Ccommits.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-commits\] 20210308 \[zookeeper\] branch branch-3.6 updated: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r7f4ad5eec0bce2821c308bb23cac53df5c94eb84de1c58de9b95c176%40%3Ccommits.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210308 \[GitHub\] \[zookeeper\] arshadmohammad commented on pull request #1625: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/ra40a88a2301a3da86e25b501ff4bc88124f2b816c2917d5f3497f8f0%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210308 \[GitHub\] \[zookeeper\] arshadmohammad commented on a change in pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/re19fa47ec901cc3cf6d7784027198e8113f8bc2dbfd6c9d6d13f5447%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210309 \[GitHub\] \[zookeeper\] ztzg closed pull request #1624: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r492cff8488a7f6eb96700afb5d137b719ddb80a833e77f971d2691c6%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210309 \[GitHub\] \[zookeeper\] ztzg commented on pull request #1624: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r0cdab13815fc419805a332278c8d27e354e78560944fc36db0bdc760%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210309 \[GitHub\] \[zookeeper\] ztzg closed pull request #1625: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r409ee2bae66bfff6aa89e6c74aff535e6248260d3afcb42bfb3b316b%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210309 \[GitHub\] \[zookeeper\] ztzg commented on pull request #1625: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r8b1963f16d6cb1230ca7ee73b6ec4f5c48f344191dbb1caabd265ee4%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210309 \[GitHub\] \[zookeeper\] ztzg commented on pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r8dc1b13b80d39fbf4a9d158850e15cd868f0460c2f364f13dca7050b%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210309 \[GitHub\] \[zookeeper\] ztzg commented on a change in pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/reca91f217f9e1ce607ce6e19a1c0b3db82b5b1b58cf39a84d6434695%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210309 \[GitHub\] \[zookeeper\] arshadmohammad commented on pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/rf77f4c4583669f1133d58cc4f1964367e253818ed8db986bb2732f7c%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-commits\] 20210310 \[zookeeper\] branch branch-3.7 updated: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/re03a4dbc15df6f390a2f8c0a071c31c8324dbef007e59fdc2592091a%40%3Ccommits.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-notifications\] 20210310 \[GitHub\] \[zookeeper\] asfgit closed pull request #1623: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r51f8975ef47c12a46fbfd7da9efea7f08e1d307fe1dc3042514659ae%40%3Cnotifications.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-issues\] 20210310 \[jira\] \[Resolved\] (ZOOKEEPER-4233) dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r734f996149bb9b1796740385fcbdf3e093eb9aabedc0f20a48ea1d68%40%3Cissues.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-commits\] 20210310 \[zookeeper\] branch branch-3.7.0 updated: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r0c6eced465950743f3041b03767a32b2e98d19731bd72277fc7ea428%40%3Ccommits.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[zookeeper-commits\] 20210310 \[zookeeper\] branch master updated: ZOOKEEPER-4233: dependency-check:check failing - Jetty 9.4.35.v20201120 - CVE-2020-27223](https://lists.apache.org/thread.html/r897a6a14d03eab09e89b809d2a650f3765065201da5bc3db9a4dd6e8%40%3Ccommits.zookeeper.apache.org%3E) (lists.apache.org) mailing-list - [\[solr-users\] 20210310 Does CVE-2020-27223 impact Solr 8.6.1](https://lists.apache.org/thread.html/r07aedcb1ece62969c406cb84c8f0e22cec7e42cdc272f3176e473320%40%3Cusers.solr.apache.org%3E) (lists.apache.org) mailing-list - [\[nifi-issues\] 20210310 \[jira\] \[Created\] (NIFI-8309) Update to latest Jetty due to reported CVE-2020-27223](https://lists.apache.org/thread.html/r4c92ea39167c0f7b096ae8268db496b5451d69606f0304b7c8a994c7%40%3Cissues.nifi.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-dev\] 20210310 Does CVE-2020-27223 impact Solr 8.6.1](https://lists.apache.org/thread.html/r7ffd050d3bd7c90d95f4933560b5f4f15971ab9a5f5322fdce116243%40%3Cdev.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[nifi-issues\] 20210310 \[jira\] \[Resolved\] (NIFI-8309) Update to latest Jetty due to reported CVE-2020-27223](https://lists.apache.org/thread.html/r1b803e6ebdac5f670708878fb1b27cd7a0ce9d774a60e797e58cee6f%40%3Cissues.nifi.apache.org%3E) (lists.apache.org) mailing-list - [\[lucene-dev\] 20210310 Re: Does CVE-2020-27223 impact Solr 8.6.1](https://lists.apache.org/thread.html/re3bd4f831f9be49871cb6adb997289b5dbcd6fe4bc5cb08223254080%40%3Cdev.lucene.apache.org%3E) (lists.apache.org) mailing-list - [\[nifi-issues\] 20210310 \[jira\] \[Commented\] (NIFI-8309) Update to latest Jetty due to reported CVE-2020-27223](https://lists.apache.org/thread.html/r463b12b27264c5e1e3c48c8c2cc5d33813d2f0d981102548fb3102fb%40%3Cissues.nifi.apache.org%3E) (lists.apache.org) mailing-list - [lists.apache.org/thread.html/r3ce0e31b25ad4ee8f7c42b62cfdc7…](https://lists.apache.org/thread.html/r3ce0e31b25ad4ee8f7c42b62cfdc72d1b586f5d6accd23f5295b6dd1%40%3Cdev.kafka.apache.org%3E) - [lists.apache.org/thread.html/re0d38cc2b5da28f708fc89de49036…](https://lists.apache.org/thread.html/re0d38cc2b5da28f708fc89de49036f3ace052c47a1202f7d70291614%40%3Cdev.kafka.apache.org%3E) - [\[spark-issues\] 20210315 \[jira\] \[Assigned\] (SPARK-34752) Upgrade Jetty to 9.4.37 to fix CVE-2020-27223](https://lists.apache.org/thread.html/r601f15f3de7ae3a7bbcd780c19155075c56443c2cdc1d193c03b4182%40%3Cissues.spark.apache.org%3E) (lists.apache.org) mailing-list - [\[spark-reviews\] 20210315 \[GitHub\] \[spark\] xkrogen opened a new pull request #31846: \[SPARK-34752\] Bump Jetty to 9.4.37 to address CVE-2020-27223](https://lists.apache.org/thread.html/rd666e187ebea2fda8624683ab51e2a5ad2108f762d21bf1a383d7502%40%3Creviews.spark.apache.org%3E) (lists.apache.org) mailing-list - [\[spark-reviews\] 20210315 \[GitHub\] \[spark\] AmplabJenkins commented on pull request #31846: \[SPARK-34752\]\[BUILD\] Bump Jetty to 9.4.37 to address CVE-2020-27223](https://lists.apache.org/thread.html/ra2f529da674f25a7351543544f7d621b5227c49a0745913b1194d11e%40%3Creviews.spark.apache.org%3E) (lists.apache.org) mailing-list - [\[spark-issues\] 20210315 \[jira\] \[Updated\] (SPARK-34752) Upgrade Jetty to 9.4.37 to fix CVE-2020-27223](https://lists.apache.org/thread.html/r4a456d89a83752a012d88a60ff4b21def6c9f650b9e69ea9fa11c9f9%40%3Cissues.spark.apache.org%3E) (lists.apache.org) mailing-list - [\[spark-issues\] 20210315 \[jira\] \[Commented\] (SPARK-34752) Upgrade Jetty to 9.4.37 to fix CVE-2020-27223](https://lists.apache.org/thread.html/r521a077885ce79c44a799118c878589e81e525cab72d368e5cfb6f61%40%3Cissues.spark.apache.org%3E) (lists.apache.org) mailing-list - [\[spark-issues\] 20210315 \[jira\] \[Created\] (SPARK-34752) Upgrade Jetty to 9.3.37 to fix CVE-2020-27223](https://lists.apache.org/thread.html/r105f4e52feb051faeb9141ef78f909aaf5129d6ed1fc52e099c79463%40%3Cissues.spark.apache.org%3E) (lists.apache.org) mailing-list - [\[spark-issues\] 20210315 \[jira\] \[Updated\] (SPARK-34752) Upgrade Jetty to 9.3.37 to fix CVE-2020-27223](https://lists.apache.org/thread.html/r27ad7843d060762cc942820566eeaa9639f75371afedf8124b943283%40%3Cissues.spark.apache.org%3E) (lists.apache.org) mailing-list - [\[spark-issues\] 20210315 \[jira\] \[Resolved\] (SPARK-34752) Upgrade Jetty to 9.4.37 to fix CVE-2020-27223](https://lists.apache.org/thread.html/rc721fe2910533bffb6bd4d69ea8ff4f36066d260dbcd2d14e041614a%40%3Cissues.spark.apache.org%3E) (lists.apache.org) mailing-list - [\[spark-reviews\] 20210315 \[GitHub\] \[spark\] HyukjinKwon commented on pull request #31846: \[SPARK-34752\]\[BUILD\] Bump Jetty to 9.4.37 to address CVE-2020-27223](https://lists.apache.org/thread.html/reb3c6dc050c7ee18ea154cd94dba85d99aa6b02b84c4bb2138a4abf2%40%3Creviews.spark.apache.org%3E) (lists.apache.org) mailing-list - [\[spark-reviews\] 20210315 \[GitHub\] \[spark\] HyukjinKwon closed pull request #31846: \[SPARK-34752\]\[BUILD\] Bump Jetty to 9.4.37 to address CVE-2020-27223](https://lists.apache.org/thread.html/r1414ab2b3f4bb4c0e736caff6dc8d15f93f6264f0cca5c47710d7bb3%40%3Creviews.spark.apache.org%3E) (lists.apache.org) mailing-list - [\[spark-reviews\] 20210316 \[GitHub\] \[spark\] xkrogen commented on pull request #31846: \[SPARK-34752\]\[BUILD\] Bump Jetty to 9.4.37 to address CVE-2020-27223](https://lists.apache.org/thread.html/r2c947376491a20d1cf143bf3c21ed74113e099d806cfe4c490a45ad8%40%3Creviews.spark.apache.org%3E) (lists.apache.org) mailing-list - [\[solr-issues\] 20210407 \[jira\] \[Created\] (SOLR-15325) High security vulnerability in Jetty library bundled within Solr - CVE-2020-27223 (+1)](https://lists.apache.org/thread.html/r068dfd35ce2193f6af28b74ff29ab148c2b2cacb235995576f5bea78%40%3Cissues.solr.apache.org%3E) (lists.apache.org) mailing-list - [\[solr-issues\] 20210507 \[jira\] \[Updated\] (SOLR-15325) High security vulnerability in Jetty library bundled within Solr - CVE-2020-27223 (+1)](https://lists.apache.org/thread.html/r855b24a3bde3674256152edfc53fb8c9000f9b59db3fecbbde33b211%40%3Cissues.solr.apache.org%3E) (lists.apache.org) mailing-list - [oracle.com/security-alerts/cpuApr2021.html](https://www.oracle.com/security-alerts/cpuApr2021.html) - [security.netapp.com/advisory/ntap-20210401-0005](https://security.netapp.com/advisory/ntap-20210401-0005/) - [\[solr-issues\] 20210623 \[jira\] \[Updated\] (SOLR-15325) High security vulnerability in Jetty library bundled within Solr - CVE-2020-27223 (+1)](https://lists.apache.org/thread.html/rf190d1d28e1367d1664ef6bc2f71227566d7b6b39209817a5364da1f%40%3Cissues.solr.apache.org%3E) (lists.apache.org) mailing-list - [DSA-4949](https://www.debian.org/security/2021/dsa-4949) (debian.org) vendor-advisory - [\[solr-issues\] 20210813 \[jira\] \[Resolved\] (SOLR-15325) High security vulnerability in Jetty library bundled within Solr - CVE-2020-27223 (+1)](https://lists.apache.org/thread.html/r65c714241b9d064a44fec10d60ebf5a37d5ebadd6bf88b0eed13ade0%40%3Cissues.solr.apache.org%3E) (lists.apache.org) mailing-list - [github.com/jetty/jetty.project/commit/10e531756b972162eed40…](https://github.com/jetty/jetty.project/commit/10e531756b972162eed402c44d0244f7f6b85131) patch ## Timeline 1. ID reserved Oct 19, 2020 2. Record published Feb 26, 2021 3. Record last updated Aug 20, 2025 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:04 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)