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Public proof of conceptFix available

CVE-2024-23898

A public proof of concept exists; no exploitation attested.

  • Published2024-01-24
  • Fixed in2.442 · 2.426.3
  • WeaknessCWE-346

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Jenkins 2.217 through 2.441 (both inclusive), LTS 2.222.1 through 2.426.2 (both inclusive) does not perform origin validation of requests made through the CLI WebSocket endpoint, resulting in a cross-site WebSocket hijacking (CSWSH) vulnerability, allowing attackers to execute CLI commands on the Jenkins controller.

Timeline

dates in UTC
  1. 2024-01-2418:15CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub
  3. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2024-23898?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2024-23898?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV · NVD
jenkins-core
BranchAffectedFixed in
2.x≥ 2.427, < 2.4422.442
2.x≥ 2.217, < 2.426.32.426.3
—all versionsno fix published
Jenkins
BranchAffectedFixed in
2.x≥ 2.217, ≤ 2.441no fix published
2.x≥ 2.222.1, ≤ 2.426.2no fix published
jenkins
BranchAffectedFixed in
2.x≥ 2.217.0, < 2.452.12.452.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update jenkins-core to 2.442 · 2.426.3

Advisories and patches

Detection

read 2026-10-23 19:24 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifieddavidmgaviria/CVE2_Jenkins_RCE
PoC-in-GitHub

Sources

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2024-01-24
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2024-23898?

Jenkins 2.217 through 2.441 (both inclusive), LTS 2.222.1 through 2.426.2 (both inclusive) does not perform origin validation of requests made through the CLI WebSocket endpoint, resulting in a cross-site WebSocket hijacking (CSWSH) vulnerability, allowing attackers to execute CLI commands on the Jenkins controller.

Is CVE-2024-23898 actively exploited?

Active exploitation of CVE-2024-23898 has not been confirmed. Its EPSS score was 67.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-23898?

CVE-2024-23898 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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