# CNCF K3s Kubernetes kubelet configuration exposes credentials

Advisory record · `GHSA-864f-7xjm-2jp2`

- **Identifiers:** `GHSA-864f-7xjm-2jp2` · `CVE-2025-46599` · `GO-2025-3646`
- **State:** Confirmed
- **Severity:** CVSS 6.8 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-1188](https://cwe.mitre.org/data/definitions/1188.html)
- **Tags:** [CWE-1188](https://agentprime.io/advisories/tag/cwe-1188.md)
- **Published:** 25 Apr 2025
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 25 Apr 2025, 06:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `github.com/k3s-io/k3s` (Go): affected `>=1.32.0-rc1, <1.32.4-rc1`; fixed in `1.32.4-rc1`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> K3s (github.com/k3s-io/k3s) versions 1.32.0-rc1 up to but not including 1.32.4-rc1 are affected. A kubelet configuration change can set ReadOnlyPort to 10255 in some situations, which may allow unauthenticated network access to that port and expose credentials. Upgrade to 1.32.4-rc1 or later.

Written 1 Nov 2026.

## 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

- 6.8 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N`, from CNA (mitre)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0046, the 39th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:14 UTC: First seen by agentprime
- 31 Oct 2026, 14:14 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-864f-7xjm-2jp2)

## Sources

- [GitHub Advisory Database: GHSA-864f-7xjm-2jp2](https://github.com/advisories/GHSA-864f-7xjm-2jp2)
- [OSV: GHSA-864f-7xjm-2jp2](https://osv.dev/vulnerability/GHSA-864f-7xjm-2jp2)
- <https://nvd.nist.gov/vuln/detail/CVE-2025-46599>
- <https://github.com/f1veT/BUG/issues/2>
- <https://github.com/k3s-io/k3s/issues/12164>
- <https://github.com/k3s-io/k3s/commit/097b63e588e3c844cdf9b967bcd0a69f4fc0aa0a>
- <https://cloud.google.com/kubernetes-engine/docs/how-to/disable-kubelet-readonly-port>
- <https://github.com/k3s-io/k3s>
- <https://github.com/k3s-io/k3s/compare/v1.32.3+k3s1...v1.32.4-rc1+k3s1>
- <https://pkg.go.dev/vuln/GO-2025-3646>

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-864f-7xjm-2jp2>, 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-864f-7xjm-2jp2/>. Everything for agents: <https://agentprime.io/llms.txt>.