CVE-2024-23897

Name: CVE-2024-23897
Creator: NVD / NIST
Published: 2024-01-24T18:15:09.37+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 100.00%

Last modified Jun 17, 2026

CVE-2024-23897 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Jenkins 2.441 and earlier, LTS 2.426.2 and earlier does not disable a feature of its CLI command parser that replaces an '@' character followed by a file path in an argument with the file's contents, allowing unauthenticated attackers to read arbitrary files on the Jenkins controller file system.. CISA has confirmed active exploitation in the wild. EPSS estimates a 100.00% chance of exploitation in the next 30 days.

Description

Jenkins 2.441 and earlier, LTS 2.426.2 and earlier does not disable a feature of its CLI command parser that replaces an '@' character followed by a file path in an argument with the file's contents, allowing unauthenticated attackers to read arbitrary files on the Jenkins controller file system.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

100.00%

100.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Sep 9, 2024.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Jenkins	Jenkins	< 2.426.3
Jenkins	Jenkins	< 2.442

References

http://packetstormsecurity.com/files/176839/Jenkins-2.441-LTS-2.426.3-CVE-2024-23897-Scanner.htmlThird Party Advisory, VDB Entry
http://packetstormsecurity.com/files/176840/Jenkins-2.441-LTS-2.426.3-Arbitrary-File-Read.htmlExploit, Third Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2024/01/24/6Mailing List
https://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3314Vendor Advisory
https://www.sonarsource.com/blog/excessive-expansion-uncovering-critical-security-vulnerabilities-in-jenkins/Exploit, Press/Media Coverage
http://packetstormsecurity.com/files/176839/Jenkins-2.441-LTS-2.426.3-CVE-2024-23897-Scanner.htmlThird Party Advisory, VDB Entry
http://packetstormsecurity.com/files/176840/Jenkins-2.441-LTS-2.426.3-Arbitrary-File-Read.htmlExploit, Third Party Advisory, VDB Entry
http://www.openwall.com/lists/oss-security/2024/01/24/6Mailing List
https://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3314Vendor Advisory
https://www.sonarsource.com/blog/excessive-expansion-uncovering-critical-security-vulnerabilities-in-jenkins/Exploit, Press/Media Coverage
https://www.vicarius.io/vsociety/posts/the-anatomy-of-a-jenkins-vulnerability-cve-2024-23897-revealed-1Exploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-23897US Government Resource

Timeline

Published: Jan 24, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-23897?

How severe is CVE-2024-23897?

CVE-2024-23897 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 100.00% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2024-23897?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-23897?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST