CVE-2026-41053: rancher — Fix

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.

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CVSS v3.1 Score

8.8

HIGH

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

EPSS — Exploit Prediction

0.0045

Probability of exploitation

0.37%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-303 CWE-303

Affected Products

Vendor	Product	Versions
suse	rancher	2.13.0 — 2.13.6
suse	rancher	2.14.0 — 2.14.2

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2026-41053? +

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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-41053? +

CVE-2026-41053 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0045, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-41053? +

CVE-2026-41053 affects products from suse, specifically: rancher. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-41053? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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