SB2026050409 - Missing Authorization in Jenkins GitHub Branch Source plugin
Published: May 4, 2026
Security Bulletin ID
SB2026050409
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Missing Authorization (CVE-ID: CVE-2026-42522)
CWE-ID: CWE-862 - Missing Authorization
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass authorization process.
The vulnerability exists due to incorrect authorization in a method implementing form validation.. A remote user can connect to an attacker-specified URL with attacker-specified GitHub App credentials.
Remediation
Install update from vendor's website.