--- title: "CVE-2024-27317: Apache Pulsar: Pulsar Functions Worker's… | CubePath" description: "In Pulsar Functions Worker, authenticated users can upload functions in jar or nar files. These files, essentially zip files, are extracted…" language: en source: https://cubepath.com/security/cve/CVE-2024-27317 --- # CVE-2024-27317: Apache Pulsar: Pulsar Functions Worker's… | CubePath ## Description In Pulsar Functions Worker, authenticated users can upload functions in jar or nar files. These files, essentially zip files, are extracted by the Functions Worker. However, if a malicious file is uploaded, it could exploit a directory traversal vulnerability. This occurs when the filenames in the zip files, which aren't properly validated, contain special elements like "..", altering the directory path. This could allow an attacker to create or modify files outside of the designated extraction directory, potentially influencing system behavior. This vulnerability also applies to the Pulsar Broker when it is configured with "functionsWorkerEnabled=true". This issue affects Apache Pulsar versions from 2.4.0 to 2.10.5, from 2.11.0 to 2.11.3, from 3.0.0 to 3.0.2, from 3.1.0 to 3.1.2, and 3.2.0\. 2.10 Pulsar Function Worker users should upgrade to at least 2.10.6\. 2.11 Pulsar Function Worker users should upgrade to at least 2.11.4\. 3.0 Pulsar Function Worker users should upgrade to at least 3.0.3\. 3.1 Pulsar Function Worker users should upgrade to at least 3.1.3\. 3.2 Pulsar Function Worker users should upgrade to at least 3.2.1\. Users operating versions prior to those listed above should upgrade to the aforementioned patched versions or newer versions. 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-2024-27317) ## Key data ### CVSS 3.1 High 8.4 Score published by apache in the CVE record. CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L | Metric | Value | What it means | | ---------------------- | ------- | ----------------------------------------------------------------------------------------- | | Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. | | Attack complexity | High | The attack depends on conditions outside the attacker's control, so it takes preparation. | | Privileges required | Low | A basic user account is needed. | | User interaction | None | No action from any user is needed. | | Scope | Changed | The impact can reach other components beyond the vulnerable one. | | Confidentiality impact | High | Serious or total effect on the secrecy of data. | | Integrity impact | High | Serious or total effect on the trustworthiness of data. | | Availability impact | Low | Limited 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 0.56934 (56.9% probability) Percentile 99.1% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA assessment as of Aug 5, 2024 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Automatable no Technical impact total ### 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-22](https://cwe.mitre.org/data/definitions/22.html) Improper Limitation of a Pathname to a Restricted Directory ## Affected products Products listed in the CVE record, as the CNA published them. - Apache Pulsar - affected: 2.4.0 up to before 2.10.6 - affected: 2.11.0 up to before 2.11.4 - affected: 3.0.0 up to before 3.0.3 - affected: 3.1.0 up to before 3.1.3 - affected: 3.2.0 up to before 3.2.1 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [lists.apache.org/thread/ct9xmvlf7lompc1pxvlsb60qstfsm9po](https://lists.apache.org/thread/ct9xmvlf7lompc1pxvlsb60qstfsm9po) mailing-list - [pulsar.apache.org/security/CVE-2024-27317](https://pulsar.apache.org/security/CVE-2024-27317/) vendor-advisory - [openwall.com/lists/oss-security/2024/03/12/10](http://www.openwall.com/lists/oss-security/2024/03/12/10) ## Timeline 1. ID reserved Feb 23, 2024 2. Record published Mar 12, 2024 3. Record last updated Feb 13, 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)