{"schema":"threatline.record/2","record":{"id":"CVE-2026-82042","aliases":[],"summary":"UTMStack < 11.2.16 Authentication Bypass via InternalApiKeyFilter","details":"UTMStack before 11.2.16 contains an authentication bypass vulnerability that allows remote attackers to gain full administrative API access by presenting a valid Utm-Internal-Key header matching the INTERNAL_KEY environment variable value, which the InternalApiKeyFilter accepts for any endpoint without path restriction, constant-time comparison, rate limiting, or audit logging. Attackers who obtain the key value can authenticate without a user account or JWT to create accounts, manage users, exfiltrate data, and modify security rules.","categories":["Unclassified"],"product":"UTMStack","vendor":"UTMStack","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-82042","source_modified_at":"2026-10-05T14:51:54.025Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"UTMStack","vendor":"UTMStack","versions":[{"status":"affected","version":"0","versionType":"semver","lessThan":"11.2.16"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-82042","source_modified_at":"2026-10-05T14:51:54.025Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"UTMStack","ecosystem":null},"version":"11.2.16","basis":"first unaffected version stated in the CVE record"}],"cvss":9.3,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00546,"percentile":0.45044,"score_date":"2026-10-23"},"published_at":"2026-10-02T20:15:27.035Z","modified_at":"2026-10-05T14:51:54.025Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-82042","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-05T14:51:54.025Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-82042","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16","tags":["release-notes"]},{"source":"CVE List","url":"https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd","tags":["patch"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/utmstack-authentication-bypass-via-internalapikeyfilter","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-05T14:51:45.461590Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-05T14:51:54.025Z","content_hash":"c21c98b6e6a44c2b4889c96c0b97cb9b3b53aa7f7e6e8037fd68699bba7459ab"}}