--- title: "CVE-2020-1927: URL Redirection to Untrusted Site | CubePath" description: "In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded…" language: en source: https://cubepath.com/security/cve/CVE-2020-1927 --- # CVE-2020-1927: URL Redirection to Untrusted Site | CubePath ## Description In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod\_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL. Official description from the CVE record, published by apache. 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-2020-1927) ## Key data ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.56691 (56.7% probability) Percentile 99.1% 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-601](https://cwe.mitre.org/data/definitions/601.html) URL Redirection to Untrusted Site ## Affected products Products listed in the CVE record, as the CNA published them. - Apache HTTP Server - affected: 2.4.0 to 2.4.41 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [\[oss-security\] 20200403 Re: CVE-2020-1927: mod\_rewrite configurations vulnerable to open redirect](http://www.openwall.com/lists/oss-security/2020/04/03/1) (openwall.com) mailing-list - [\[oss-security\] 20200403 Re: CVE-2020-1927: mod\_rewrite configurations vulnerable to open redirect](http://www.openwall.com/lists/oss-security/2020/04/04/1) (openwall.com) mailing-list - [\[httpd-dev\] 20200404 Odd vulnerabilities\_24.html output](https://lists.apache.org/thread.html/r52a52fd60a258f5999a8fa5424b30d9fd795885f9ff4828d889cd201%40%3Cdev.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-dev\] 20200404 Re: Odd vulnerabilities\_24.html output](https://lists.apache.org/thread.html/r1719675306dfbeaceff3dc63ccad3de2d5615919ca3c13276948b9ac%40%3Cdev.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-cvs\] 20200411 svn commit: r1876405 - in /httpd/test/framework/trunk/t: conf/core.conf.in security/CVE-2020-1927.t](https://lists.apache.org/thread.html/r70ba652b79ba224b2cbc0a183078b3a49df783b419903e3dcf4d78c7%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-cvs\] 20200412 svn commit: r1876426 - /httpd/test/framework/trunk/t/security/CVE-2020-1927.t](https://lists.apache.org/thread.html/r10b853ea87dd150b0e76fda3f8254dfdb23dd05fa55596405b58478e%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [openSUSE-SU-2020:0597](http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00002.html) (lists.opensuse.org) vendor-advisory - [oracle.com/security-alerts/cpujul2020.html](https://www.oracle.com/security-alerts/cpujul2020.html) - [httpd.apache.org/security/vulnerabilities\_24.html](https://httpd.apache.org/security/vulnerabilities%5F24.html) - [security.netapp.com/advisory/ntap-20200413-0002](https://security.netapp.com/advisory/ntap-20200413-0002/) - [USN-4458-1](https://usn.ubuntu.com/4458-1/) (usn.ubuntu.com) vendor-advisory - [FEDORA-2020-189a1e6c3e](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HYVYE2ZERFXDV6RMKK3I5SDSDQLPSEIQ/) (lists.fedoraproject.org) vendor-advisory - [DSA-4757](https://www.debian.org/security/2020/dsa-4757) (debian.org) vendor-advisory - [FEDORA-2020-0d3d3f5072](https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A2RN46PRBJE7E7OPD4YZX5SVWV5QKGV5/) (lists.fedoraproject.org) vendor-advisory - [\[httpd-cvs\] 20210330 svn commit: r1073139 \[1/13\] - in /websites/staging/httpd/trunk/content: ./ security/json/](https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-cvs\] 20210330 svn commit: r1073143 \[3/3\] - in /websites/staging/httpd/trunk/content: ./ security/](https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-cvs\] 20210330 svn commit: r1888194 \[13/13\] - /httpd/site/trunk/content/security/json/](https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-cvs\] 20210330 svn commit: r1073140 \[4/4\] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities\_13.html security/vulnerabilities\_20.html security/vulnerabilities\_22.html security/vulnerabilities\_24.html](https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-cvs\] 20210330 svn commit: r1073139 \[13/13\] - in /websites/staging/httpd/trunk/content: ./ security/json/](https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-cvs\] 20210330 svn commit: r1073149 \[1/13\] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/](https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-cvs\] 20210330 svn commit: r1073149 \[13/13\] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/](https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-cvs\] 20210330 svn commit: r1073158 - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-1927.json security/vulnerabilities\_24.html](https://lists.apache.org/thread.html/r731d43caece41d78d8c6304641a02a369fd78300e7ffaf566b06bc59%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-cvs\] 20210330 svn commit: r1888215 - /httpd/site/trunk/content/security/json/CVE-2020-1927.json](https://lists.apache.org/thread.html/r6a4146bf3d1645af2880f8b7a4fd8afd696d5fd4a3ae272f49f5dc84%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [\[httpd-cvs\] 20210606 svn commit: r1075470 \[4/4\] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities\_13.html security/vulnerabilities\_20.html security/vulnerabilities\_22.html security/vulnerabilities\_24.html](https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E) (lists.apache.org) mailing-list - [oracle.com/security-alerts/cpuApr2021.html](https://www.oracle.com/security-alerts/cpuApr2021.html) - [\[debian-lts-announce\] 20210709 \[SECURITY\] \[DLA 2706-1\] apache2 security update](https://lists.debian.org/debian-lts-announce/2021/07/msg00006.html) (lists.debian.org) mailing-list - [oracle.com/security-alerts/cpujul2022.html](https://www.oracle.com/security-alerts/cpujul2022.html) ## Timeline 1. ID reserved Dec 2, 2019 2. Record published Apr 1, 2020 3. Record last updated Aug 4, 2024 ## 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, 20:03 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)