Critical 9.8Known exploited (CISA KEV)Published Jan 24, 2024

CVE-2024-23897Jenkins 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,…

Updated under an hour ago (Oct 27, 2026, 8:30 PM ET)

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It affects Jenkins Project Jenkins and 1 other product. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Aug 19, 2024; federal agencies had to remediate by Sep 9, 2024, and it is known to be used in ransomware. Treat that date as your deadline.

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Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-27
Known exploited: Added to CISA KEV Aug 19, 2024; federal remediation due Sep 9, 2024; known ransomware useApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
EPSS (exploitation in the next 30 days): 100.00% (percentile 100)
Assigned by: jenkins
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Jenkins Project Jenkins jenkins_project:jenkins (from the name)	before 1.606 not affected; from 2.442 not affected; 2.426.3 builds before 2.426.* not affected; 2.440.1 builds before 2.440.* not affected	CNA record
jenkins jenkins jenkins:jenkins	before 1.606 not affected; from 2.442 not affected; from 2.426.3 before 2.427 not affected; from 2.440.1 before 2.441 not affected	CISA ADP
jenkins jenkins jenkins:jenkins	before 2.426.3; before 2.442	NVD

References

References

https://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3314	vendor-advisory
https://www.sonarsource.com/blog/excessive-expansion-uncovering-critical-security-vulnerabilities-in-jenkins/	exploit, press/media-coverage
http://www.openwall.com/lists/oss-security/2024/01/24/6	mailing-list
http://packetstormsecurity.com/files/176839/Jenkins-2.441-LTS-2.426.3-CVE-2024-23897-Scanner.html	third-party-advisory, vdb-entry
http://packetstormsecurity.com/files/176840/Jenkins-2.441-LTS-2.426.3-Arbitrary-File-Read.html	exploit, third-party-advisory, vdb-entry
https://www.vicarius.io/vsociety/posts/the-anatomy-of-a-jenkins-vulnerability-cve-2024-23897-revealed-1	exploit, third-party-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-23897	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.