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CVE-2024-23897VulnerabilityPublished Updated

CVE-2024-23897: Jenkins · CWE-27

Affects JenkinsSource CVE Database V5

0

Exploited in the wild · used in ransomware campaigns · KEV due 9 Sep 2024 · public exploit available (Metasploit, Exploit-DB) · 99% EPSS : apply the vendor's fix or mitigations to Jenkins now.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
KEV deadline
 US federal agencies must patch by this date; a sensible deadline for everyone else.
Ransomware
Used in ransomware campaigns
EPSS
99.9% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 24 Jan 2024

  2. Exploited in the wild: evidence found.

    Listed in CISA KEV 208 days after disclosure

  3. Observed by OffSeq Mirage: evidence found.

    6 honeypot hits, first 2.7 years after disclosure

Timeline

  1. CVE ID reserved

    by Jenkins Project

    , 29 hours before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. First Exploit-DB entry (opens in a new tab)

    Jenkins 2.441 - Local File Inclusion

    , 82 days after disclosure

  4. Added to CISA KEV (opens in a new tab)

    exploitation confirmed · ransomware use known

    , 208 days after disclosure

  5. KEV remediation due

    US federal deadline

    , 229 days after disclosure

  6. First seen by OffSeq Mirage

    from 2 attacker networks; activity in Brazil, Netherlands

    , 2.7 years after disclosure

  7. , 2.7 years after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), OffSeq Mirage (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected software

ProductAffectedFixed in
Jenkins Project JenkinsAffected
  • <=2.441
  • <=2.426.2
Fixed in–

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.

References

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