What is CVE-2026-42522?

CVE-2026-42522 is a medium-severity vulnerability in Jenkins Github_branch_source, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-04-29.

How severe is CVE-2026-42522?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Jenkins Github_branch_source

CVE-2026-42522

A missing permission check in Jenkins GitHub Branch Source Plugin 1967.vdea_d580c1a_b_a_ and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL with attacker-specified GitHub App credentials.

Vulnerability class: Broken Access Control

EPSS: 0.000 (6.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Jenkins Github_branch_source
Jenkins Project Github Branch Source Plugin — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Jenkins Security Advisory 2026-04-29 (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42522?: CVE-2026-42522 is a medium-severity vulnerability in Jenkins Github_branch_source, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-04-29.
How severe is CVE-2026-42522?: Medium severity. CVSS v3 base score is 4.3 out of 10.