CVE-2026-27100

MEDIUM

Jenkins < 2.551 and LTS < 2.541.2 - Exposure of Sensitive Build Information via Run Parameter

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 4.3
EPSS 0.0033
EPSS Percentile 24.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-200
Status published
Products (3)
jenkins/jenkins < 2.541.2
jenkins/jenkins < 2.551
org.jenkins-ci.main/jenkins-core 0 - 2.551Maven
Published Feb 18, 2026
Tracked Since Feb 18, 2026