CVE-2026-41053 PUBLISHED

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

Assigner: suse
Reserved: 16.04.2026 Published: 30.06.2026 Updated: 30.06.2026

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.

Metrics

CVSS 3.1

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

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	SUSE
Product	Rancher
Versions	Default: unaffected affected from 2.14.0 to 2.14.2 (excl.) affected from 2.13.0 to 2.13.6 (excl.)

References

https://github.com/rancher/rancher/security/advisories/GHSA-4j6x-2764-m8gh

Problem Types

CWE-303 Incorrect implementation of authentication algorithm CWE

Impacts

CAPEC-233 Privilege Escalation