CVE-2026-42522
Jenkins GitHub Branch Source Plugin: Missing permissions check allows attackers to perform a connection test
4.3
MEDIUM
CVSS 3.1
EPSS 0.02%
Description
Jenkins GitHub Branch Source Plugin versions 1967.vdea_d580c1a_b_a_ and earlier do not perform a permission check in a method implementing form validation. This allows attackers with Overall/Read permission to connect to an attacker-specified URL with attacker-specified GitHub App credentials. GitHub Branch Source Plugin 1967.1969.v205fd594c821 requires Overall/Manage permission to perform the connection test.
How to fix CVE-2026-42522
To remediate CVE-2026-42522, upgrade the affected package to a fixed version below.
- —upgrade to 1967.1969.v205fd594c821 or later
Is CVE-2026-42522 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1967.1969.v205fd594c821
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |