CVE-2026-41053

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

Published: Jun 30, 2026Updated: Jul 2, 2026 Sources: CVE List NVDCWE-303

8.8HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

Open in CVSS calculator →

Weaknesses

CWE-303

Affected Products

SUSE

commercial·DE

RancherOn-prem

DevTools & CI / ci-cd

and 1 more affected products View all →

Exploitability

Official Patch Available

Is your org exposed to CVE-2026-41053?We can run the check for you — a free external exposure review, no install. Check my exposure

References

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

github.com

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-41053 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows