---
id: "CVE-2026-119660"
kind: "vulnerability"
aliases: ["CVE-2026-119660"]
title: "MuseBot: hard-coded session key lets attackers forge admin sessions"
severity: "critical"
cvss: 9.8
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["musebot", "other", "self-hosted"]
not_affected_if: ["custom-session-key", "version-2.0.0-or-later"]
published_at: "2026-10-30T15:16:50+00:00"
first_seen_at: "2026-10-30T15:31:10+00:00"
updated_at: "2026-10-30T15:32:59+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119660", "first_seen_at": "2026-10-30T15:31:10+00:00"}]
---

# MuseBot: hard-coded session key lets attackers forge admin sessions

MuseBot before 2.0.0 signs its session cookies with a hard-coded default session key, 'muse_bot_session_key'. An unauthenticated attacker can forge a cookie for any user ID and gain full administrative access, including password hashes, chat records and bot configuration.

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

## How to check

- Check the MuseBot version in use; versions before `2.0.0` are affected.
- Check whether the `session_key` setting is still the default value `muse_bot_session_key` (unknown where it is configured).

## Fix

- Move to MuseBot `2.0.0` or later (the sources state the fix is in `2.0.0`).

## Timeline

- 2026-10-30T15:31:10+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119660

## From the sources

MuseBot before 2.0.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge admin sessions by using the hard-coded default session_key 'muse_bot_session_key'. Attackers can sign a MuseBot-session cookie carrying a user_id to gain full administrative access, reading password hashes, chat records, and bot configuration, and stopping bots.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_