CVE-2026-119660

CRITICAL

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.

CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 10/30/2026Modified: 10/30/2026

Related Intelligence (1)

CRITICALVulnerability

NVD CRITICAL: CVE-2026-119660 — MuseBot before 2.0.0 contains an authentication bypass vulnerability that allows...

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.

CVE-2026-119660
NIST NVD

References (8)

https://github.com/yincongcyincong/MuseBothttps://github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/conf/conf.go#L28https://github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/controller/login.go#L19-L88https://github.com/yincongcyincong/MuseBot/commit/139f6158b50283b983d76976f593a3a09a064681https://github.com/yincongcyincong/MuseBot/commit/3e64518948fe7037058f07ef987d35216c3f0caehttps://github.com/yincongcyincong/MuseBot/issues/61https://hackmd.io/@hieuPenguinnn/musebot-admin-default-session-key-auth-bypasshttps://www.vulncheck.com/advisories/musebot-before-2.0.0-authentication-bypass-via-hard-coded-session-key