CVE-2026-41053

Over-inclusive team membership expansion in GitHub App authentication provider for Rancher

State: Published
Severity: 8.8 High
Published: Jun 30, 2026
Updated: Jul 1, 2026
Reserved: Apr 16, 2026

Description

Incorrect authentication caching in the team member ship expansion of the Rancher Github authentication provider caused it granting principal access to any logged in user, in 2.13 before 2.13.6 and 2.14 before 2.14.2.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	suse

Weaknesses

CWE-303 Incorrect implementation of authentication algorithm

Affected Products

Product	Versions
RancherSUSE	2.14.0 to before 2.14.2Affected 2.13.0 to before 2.13.6Affected

References

https://github.com/rancher/rancher/security/advisories/GHSA-4j6x-2764-m8ghvendor-advisory

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