{"id":"CVE-2026-119660","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-119660","generatedAt":"2026-11-04T11:49:44.846Z","title":"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'.","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.","published":"2026-10-30T15:16:50.000Z","lastModified":"2026-10-30T19:23:25.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":9.3,"severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-1394"],"affected":[],"epss":{"score":0.0052,"percentile":0.44211,"date":"2026-11-03","history":[{"date":"2026-10-31","score":0.0052,"percentile":0.44179}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-30T15:16:50.000Z","detail":{"score":"9.3","severity":"CRITICAL","publishedAt":"2026-10-30T15:16:50.197Z"},"summary":"New CVE, critical severity (CVSS 9.3)."}],"references":[{"url":"https://github.com/yincongcyincong/MuseBot","source":"disclosure@vulncheck.com"},{"url":"https://github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/conf/conf.go#L28","source":"disclosure@vulncheck.com"},{"url":"https://github.com/yincongcyincong/MuseBot/blob/v1.0.42/admin/controller/login.go#L19-L88","source":"disclosure@vulncheck.com"},{"url":"https://github.com/yincongcyincong/MuseBot/commit/139f6158b50283b983d76976f593a3a09a064681","source":"disclosure@vulncheck.com"},{"url":"https://github.com/yincongcyincong/MuseBot/commit/3e64518948fe7037058f07ef987d35216c3f0cae","source":"disclosure@vulncheck.com"},{"url":"https://github.com/yincongcyincong/MuseBot/issues/61","source":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@hieuPenguinnn/musebot-admin-default-session-key-auth-bypass","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/musebot-before-2.0.0-authentication-bypass-via-hard-coded-session-key","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-119660","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}