Auth bypass in Go-pkgz Auth
CVE-2026-42560
auth provides authentication via oauth2, direct and email. From versions 1.18.0 to before 1.25.2 and 2.0.0 to before 2.1.2, the Patreon OAuth provider maps every authenticated Patreon account to the same local user.ID, instead of deriving…
Vulnerability class: Broken Authentication
EPSS: 0.000 (8.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Go-pkgz Auth — versions >= 1.18.0, < 1.25.2, >= 2.0.0, < 2.1.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-42560?
- CVE-2026-42560 is a critical-severity vulnerability in Go-pkgz Auth, classified under Improper Authentication. CVSS score: 9.1/10. Published 2026-05-09.
- How severe is CVE-2026-42560?
- Critical severity. CVSS v3 base score is 9.1 out of 10.