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6.5

Jenkins may allow attackers to run code

published 4 days ago
Summary

The Jenkins automation server included in the cleanstart/jenkins package has a weakness that could let a malicious user execute commands on the server. This could lead to unauthorized changes, data loss, or further compromise of your network. Update Jenkins to the latest version or apply the vendor’s recommended patch as soon as possible.

What to do
  • Update cleanstart jenkins to version 2.275-r0.
Affected software
Ecosystem VendorProductAffected versions
CleanStart cleanstart jenkins < 2.275-r0
Fix: upgrade to 2.275-r0
Original advisory text
Jenkins 2
Security vulnerability affects the jenkins package. Jenkins 2.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
6.5 Medium
Timeline
Published31 Oct 2026
Updated31 Oct 2026
First seen31 Oct 2026
Sources
CLEANSTART-2025-BM39220 · OSV
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