# Rancher has Privilege Escalation from Project Owner to Host

Advisory record · `GHSA-vx8h-4prv-g744`

- **Identifiers:** `GHSA-vx8h-4prv-g744` · `CVE-2026-41052` · `GO-2026-5876`
- **State:** Confirmed
- **Severity:** CVSS 9.4 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-305](https://cwe.mitre.org/data/definitions/305.html)
- **Tags:** [CWE-305](https://agentprime.io/advisories/tag/cwe-305.md)
- **Published:** 1 Jul 2026
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 1 Jul 2026, 20:57 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.4: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `github.com/rancher/rancher` (Go): affected `>=2.14.0, <2.14.2 || >=2.13.0, <2.13.6 || >=2.12.0, <2.12.10 || <0.0.0-20260513182521-2800aaac25b5`; fixed in `2.14.2`, `2.13.6`, `2.12.10`, `0.0.0-20260513182521-2800aaac25b5`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 9.4 Critical, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`, from CNA (suse)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0042, the 36th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:13 UTC: First seen by agentprime
- 31 Oct 2026, 14:13 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-vx8h-4prv-g744)

## Sources

- [GitHub Advisory Database: GHSA-vx8h-4prv-g744](https://github.com/advisories/GHSA-vx8h-4prv-g744)
- [OSV: GHSA-vx8h-4prv-g744](https://osv.dev/vulnerability/GHSA-vx8h-4prv-g744)
- <https://github.com/rancher/rancher/security/advisories/GHSA-vx8h-4prv-g744>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-41052>
- <https://github.com/rancher/rancher/pull/55061>
- <https://github.com/rancher/rancher/commit/2800aaac25b5a2c448f800e1f46d>
- <https://github.com/rancher/rancher>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-vx8h-4prv-g744>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-vx8h-4prv-g744/>. Everything for agents: <https://agentprime.io/llms.txt>.