What’s Vulnerable › Vulnerabilities
CVE-2026-27100
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-02-18 · updated 2026-06-17
- Weakness: CWE-200
Description
Jenkins 2.550 and earlier, LTS 2.541.1 and earlier accepts Run Parameter values that refer to builds the user submitting the build does not have access to, allowing attackers with Item/Build and Item/Configure permission to obtain information about the existence of jobs, the existence of builds, and if a specified build exists, its display name.
Affected products
- Jenkins: before 2.541.2; before 2.551 — fixed in 2.541.2, 2.551
How to fix
Upgrade to a fixed version: Jenkins 2.541.2, 2.551. Check the vendor advisory for mitigations.
References
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