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7.5

Jenkins: Unrestricted File Uploads Can Cause Server Overload

CVE-2023-27901 · published 3 years ago
Summary

Jenkins versions 2.393 and earlier, including LTS 2.375.3 and earlier, may allow attackers to overload the server by uploading too many files at once. This can cause the server to become unresponsive. Update to a patched version to prevent this issue.

What to do
  • Update jenkins-ci org.jenkins-ci.main:jenkins-core to version 2.375.4.
  • Update jenkins-ci org.jenkins-ci.main:jenkins-core to version 2.394.
  • Update jenkins-ci org.jenkins-ci.main:jenkins-core to version 2.387.1.
Affected software
Ecosystem VendorProductAffected versions
maven jenkins-ci org.jenkins-ci.main:jenkins-core < 2.375.4
>= 2.388, < 2.394
>= 2.376, < 2.387.1
Fix: upgrade to 2.375.4
– jenkins jenkins < 2.375.4
< 2.394
cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*
Original advisory text
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 ...
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
7.5 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-770Allocation of Resources Without Limits
Timeline
Published10 Mar 2023
Updated3 Nov 2026
First seen6 Mar 2026
Sources
GHSA-h76p-mc68-jv3p · GHSA
CVE-2023-27901 · NVD
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