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TI-2026-29692 Aliases CVE-2026-41053GHSA-4j6x-2764-m8gh

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

Priority MEDIUM 41CWE-303Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00524 44th percentileScored 2026-11-07
Fix Fixed Rancher (SUSE): 2.14.2, 2.13.6github.com/rancher/rancher (Go): 2.14.2, 2.13.6, 0.0.0-20260519172014-d0c047bbc6d2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SUSERancher2.14.0 to before 2.14.2; 2.13.0 to before 2.13.62.14.2, 2.13.6Patch availableCNA
—github.com/rancher/rancher (Go)2.14.0 to before 2.14.22.14.2Patch availableGHSA-4j6x-2764-m8gh
—github.com/rancher/rancher (Go)2.13.0 to before 2.13.62.13.6Patch availableGHSA-4j6x-2764-m8gh
—github.com/rancher/rancher (Go)before 0.0.0-20260519172014-d0c047bbc6d20.0.0-20260519172014-d0c047bbc6d2Patch availableGHSA-4j6x-2764-m8gh
  • Rancher VendorSUSE Affected 2.14.0 to before 2.14.2; 2.13.0 to before 2.13.6 Fixed in 2.14.2, 2.13.6 Patch available CNA
  • github.com/rancher/rancher (Go) Vendor— Affected 2.14.0 to before 2.14.2 Fixed in 2.14.2 Patch available GHSA-4j6x-2764-m8gh
  • github.com/rancher/rancher (Go) Vendor— Affected 2.13.0 to before 2.13.6 Fixed in 2.13.6 Patch available GHSA-4j6x-2764-m8gh
  • github.com/rancher/rancher (Go) Vendor— Affected before 0.0.0-20260519172014-d0c047bbc6d2 Fixed in 0.0.0-20260519172014-d0c047bbc6d2 Patch available GHSA-4j6x-2764-m8gh

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*2.13.0 to before 2.13.6; 2.14.0 to before 2.14.2VulnerableSUSE
  • cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:* Versions 2.13.0 to before 2.13.6; 2.14.0 to before 2.14.2 Vulnerable ·SUSE

Remediation

  • Fix · CNA Rancher (SUSE) Fixed in 2.14.2, 2.13.6
  • Fix · GHSA-4j6x-2764-m8gh github.com/rancher/rancher (Go) Fixed in 2.14.2 Advisory →
  • Fix · GHSA-4j6x-2764-m8gh github.com/rancher/rancher (Go) Fixed in 2.13.6 Advisory →
  • Fix · GHSA-4j6x-2764-m8gh github.com/rancher/rancher (Go) Fixed in 0.0.0-20260519172014-d0c047bbc6d2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41053
  2. 2026-10-03 Alias added: GHSA-4j6x-2764-m8gh

References

Patch 1

Advisory 1

Other 5

  • TI-2021-14903 Rancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io object CVSS 3.1CRITICAL 9.9
  • TI-2022-21489 Rancher: Non-random authentication token CVSS 3.1CRITICAL 9.8
  • TI-2019-08380 An issue was discovered that affects the following versions of Rancher: v2.0.0 through… CVSS 3.0CRITICAL 9.8
  • TI-2023-08827 Improper privilege management in SUSE Rancher CVSS 3.1CRITICAL 9.9
  • TI-2023-08823 Improper privilege management in SUSE Rancher CVSS 3.1CRITICAL 9.9
  • TI-2022-21491 Rancher: Exposure of sensitive fields CVSS 3.1CRITICAL 9.9
See all 35 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences