{"schema":"threatline.record/2","record":{"id":"CVE-2026-111633","aliases":[],"summary":"ZKEACMS through 4.4 Authentication Bypass via Hard-Coded JWT Signing Key","details":"ZKEACMS through 4.4 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge REST API JWT bearer tokens using a hard-coded HMAC-SHA256 signing key in JwtBearerDefaults.cs. Attackers can sign a token with the Name claim set to 'admin' to call ApiAuthorize endpoints, modifying articles and products and reading form submissions.","categories":["Unclassified"],"product":"ZKEACMS","vendor":"SeriaWei","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-111633","source_modified_at":"2026-10-23T18:31:57.561Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"ZKEACMS","vendor":"SeriaWei","versions":[{"version":"0","lessThanOrEqual":"4.4","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":8.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.0034,"percentile":0.26245,"score_date":"2026-10-23"},"published_at":"2026-10-16T17:39:06.226Z","modified_at":"2026-10-23T18:31:57.561Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-111633","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T18:31:57.561Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-111633","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@hieuPenguinnn/zkeacms-hardcoded-jwt-signing-key-admin-auth-bypass","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/SeriaWei/ZKEACMS/blob/v4.4/src/ZKEACMS/Api/JwtBearerDefaults.cs#L14-L19","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/SeriaWei/ZKEACMS/blob/v4.4/src/ZKEACMS/BuilderAuthentication.cs#L41-L52","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/SeriaWei/ZKEACMS/issues/531","tags":["exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/zkeacms-through-4.4-authentication-bypass-via-hard-coded-jwt-signing-key","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-23T18:31:49.188862Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-23T18:31:57.561Z","content_hash":"a711d855c72de0d76c89fd29ab52e241775a305cba7c20be290bbf31ec65d2e5"}}