Is CVE-2026-119660 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-119660?

CVE-2026-119660 has a CVSS v3 severity of CRITICAL (9.8).

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CVE-2026-119660

Description

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.