CVE-2024-23898

high-risk
Published 2024-01-24

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.

Do I need to act?

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36.9% chance of exploitation in next 30 days
EPSS score — higher than 63% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Jenkins

References (6)

http://www.openwall.com/lists/oss-security/2024/01/24/6
Vendor Advisory https://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3315
https://www.sonarsource.com/blog/excessive-expansion-uncovering-critical-securit...
http://www.openwall.com/lists/oss-security/2024/01/24/6
Vendor Advisory https://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3315
https://www.sonarsource.com/blog/excessive-expansion-uncovering-critical-securit...
53
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 16/34 · Moderate
Exposure 7/34 · Low