CVE-2023-27901

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-10 · updated 2026-06-17
Weakness: CWE-770

Description

Jenkins 2.393 and earlier, LTS 2.375.3 and earlier uses the Apache Commons FileUpload library without specifying limits for the number of request parts introduced in version 1.5 for CVE-2023-24998 in org.kohsuke.stapler.RequestImpl, allowing attackers to trigger a denial of service.

Affected products

Jenkins: before 2.375.4; before 2.394 — fixed in 2.375.4, 2.394

How to fix

Upgrade to a fixed version: Jenkins 2.375.4, 2.394. Check the vendor advisory for mitigations.

References

https://www.jenkins.io/security/advisory/2023-03-08/#SECURITY-3030
https://www.jenkins.io/security/advisory/2023-03-08/#SECURITY-3030

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