CVE-2026-119660

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CVE-2026-119660

Summary: MuseBot before 2.0.0 Authentication Bypass via Hard-Coded Session Key

Details: 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.

References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119660.json, https://hackmd.io/@hieuPenguinnn/musebot-admin-default-session-key-auth-bypass, https://nvd.nist.gov/vuln/detail/CVE-2026-119660, https://www.vulncheck.com/advisories/musebot-before-2.0.0-authentication-bypass-via-hard-coded-session-key, https://github.com/yincongcyincong/MuseBot/issues/61, https://github.com/yincongcyincong/MuseBot/commit/139f6158b50283b983d76976f593a3a09a064681, https://github.com/yincongcyincong/MuseBot/commit/3e64518948fe7037058f07ef987d35216c3f0cae, https://github.com/yincongcyincong/MuseBot, https://github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/conf/conf.go#L28, https://github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/controller/login.go#L19-L88