---
id: "CVE-2026-125357"
page: "https://infrastack.ai/live/CVE-2026-125357"
kind: "vulnerability"
aliases: ["CVE-2026-125357"]
title: "Munin: path traversal in static handler exposes config files and credentials"
severity: "medium"
cvss: 6.9
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["monitoring", "munin", "other", "self-hosted"]
not_affected_if: ["auth-required", "not-exposed-to-network"]
published_at: "2026-11-10T00:17:07+00:00"
first_seen_at: "2026-11-10T00:28:41+00:00"
updated_at: "2026-11-10T00:30:19+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-125357", "first_seen_at": "2026-11-10T00:28:41+00:00"}]
exploit_sources: []
---

# Munin: path traversal in static handler exposes config files and credentials

Link for people: https://infrastack.ai/live/CVE-2026-125357 (this .md is for agents)

Munin's built-in HTTP server (munin-httpd) checks requests for '/../' in a way that can be bypassed, so an unauthenticated attacker can read files outside the static directory. The sources say this includes munin.conf and plugin-conf.d files that hold monitored service credentials.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `munin-httpd --version` or check the installed Munin package version; affected range is 2.99.1 through 2.999.18.
- Check whether munin-httpd is reachable from the internet or untrusted networks, since the flaw is unauthenticated.
- Review the web server configuration that serves Munin's /static/ path.

## Fix

- Move to a Munin release later than 2.999.18 (the sources do not name the exact fixed version; see the patch link).

## Timeline

- 2026-11-10T00:28:41+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-125357

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/munin-munin-httpd-through-2.999.18-path-traversal-via-static-file-handler
- [fix] Patch: github.com https://github.com/munin-monitoring/munin/commit/e7b6f452ccca04cff8a0e7285c1279b116a768e1

## From the sources

Munin munin-httpd 2.99.1 through 2.999.18 contains a path traversal vulnerability in the static file handler of Munin::Master::HTML::handle_request that allows unauthenticated attackers to read files outside the static directory. Attackers can request /static/../<file> to bypass the '/../' substring check and read munin.conf and plugin-conf.d files containing monitored service credentials.

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