{"id":"CVE-2026-116747","state":"PUBLISHED","title":"Kener 3.0.0 before 4.1.10 Authentication Bypass via Hardcoded Fallback JWT Secret","description":"Kener 3.0.0 before 4.1.10 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge session tokens by using the hardcoded DUMMY_SECRET fallback key. When KENER_SECRET_KEY is empty or unset, attackers knowing an administrator email can sign a kener-user cookie to access /manage/api with full administrative privileges or forge password-reset tokens.","publishedAt":"2026-10-26T21:52:45.058Z","updatedAt":"2026-10-26T21:52:45.058Z","severity":{"score":9.2,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["rajnandan1 kener"],"affected":[{"vendor":"rajnandan1","product":"kener","packageURL":"pkg:github/rajnandan1/kener","defaultStatus":"unaffected","versions":[{"version":"3.0.0","status":"affected","lessThan":"4.1.10","versionType":"semver"}],"repo":"https://github.com/rajnandan1/kener"}],"references":["https://github.com/rajnandan1/kener/issues/871","https://github.com/rajnandan1/kener","https://github.com/rajnandan1/kener/commit/ff636483544c926eab5b5e3e26b811c0f52bcaf8","https://github.com/rajnandan1/kener/releases/tag/v4.1.10","https://github.com/rajnandan1/kener/blob/v4.1.9/src/lib/server/controllers/commonController.ts#L44-L55","https://www.vulncheck.com/advisories/kener-3.0.0-before-4.1.10-authentication-bypass-via-hardcoded-fallback-jwt-secret"],"weaknesses":["CWE-321"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/116xxx/CVE-2026-116747.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116747","state":"PUBLISHED","datePublished":"2026-10-26T21:52:45.058Z","dateUpdated":"2026-10-26T21:52:45.058Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-26T20:23:37.323Z"},"containers":{"cna":{"title":"Kener 3.0.0 before 4.1.10 Authentication Bypass via Hardcoded Fallback JWT Secret","descriptions":[{"lang":"en","value":"Kener 3.0.0 before 4.1.10 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge session tokens by using the hardcoded DUMMY_SECRET fallback key. When KENER_SECRET_KEY is empty or unset, attackers knowing an administrator email can sign a kener-user cookie to access /manage/api with full administrative privileges or forge password-reset tokens."}],"affected":[{"vendor":"rajnandan1","product":"kener","packageURL":"pkg:github/rajnandan1/kener","defaultStatus":"unaffected","versions":[{"version":"3.0.0","status":"affected","lessThan":"4.1.10","versionType":"semver"}],"repo":"https://github.com/rajnandan1/kener"}],"references":[{"url":"https://github.com/rajnandan1/kener/issues/871","tags":["issue-tracking"],"name":"GitHub Issue #871"},{"url":"https://github.com/rajnandan1/kener","tags":["product"]},{"url":"https://github.com/rajnandan1/kener/commit/ff636483544c926eab5b5e3e26b811c0f52bcaf8","tags":["patch"]},{"url":"https://github.com/rajnandan1/kener/releases/tag/v4.1.10","tags":["release-notes"],"name":"kener v4.1.10 Release Notes"},{"url":"https://github.com/rajnandan1/kener/blob/v4.1.9/src/lib/server/controllers/commonController.ts#L44-L55","tags":["technical-description"]},{"url":"https://www.vulncheck.com/advisories/kener-3.0.0-before-4.1.10-authentication-bypass-via-hardcoded-fallback-jwt-secret","name":"VulnCheck Advisory: Kener 3.0.0 before 4.1.10 Authentication Bypass via Hardcoded Fallback JWT Secret","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":9.2,"baseSeverity":"CRITICAL"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-321","lang":"en","description":"Use of Hard-coded Cryptographic Key","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-26T21:52:45.058Z"},"datePublic":"2026-10-09T00:00:00.000Z","credits":[{"lang":"en","value":"George Chen","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}