{"id":"CVE-2026-54147","state":"PUBLISHED","title":"http4k: `DigestAuthProvider.verify` ignored configured algorithm and did not bind to request URI","description":"http4k is a functional toolkit for Kotlin HTTP applications. Prior to 4.51.0.0, 5.42.0.0, and 6.50.0.0, DigestAuthProvider.verify in http4k-security-digest ignores its configured algorithm parameter and verifies every Digest response with hardcoded MD5. Deployments configured for SHA-256 therefore receive weaker MD5-based verification, exposing Digest authentication to collision-related attack paths that depend on the hash function's collision resistance. This issue is fixed in versions 4.51.0.0, 5.42.0.0, and 6.50.0.0.","publishedAt":"2026-09-18T16:10:40.692Z","updatedAt":"2026-09-18T17:28:07.389Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["http4k http4k"],"affected":[{"vendor":"http4k","product":"http4k","versions":[{"version":"< 4.51.0.0","status":"affected"},{"version":">= 5.0.0.0, < 5.42.0.0","status":"affected"},{"version":">= 6.0.0.0, < 6.50.0.0","status":"affected"}]}],"references":["https://github.com/http4k/http4k/security/advisories/GHSA-vxxm-wwqh-mh47","https://github.com/http4k/http4k/commit/65d23d99fc5afbe34f29d8f61d0a003fbebb381c","https://github.com/http4k/http4k/releases/tag/6.50.0.0"],"weaknesses":["CWE-327"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54147.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54147","state":"PUBLISHED","datePublished":"2026-09-18T16:10:40.692Z","dateUpdated":"2026-09-18T17:28:07.389Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-11T21:15:33.871Z"},"containers":{"cna":{"title":"http4k: `DigestAuthProvider.verify` ignored configured algorithm and did not bind to request URI","descriptions":[{"lang":"en","value":"http4k is a functional toolkit for Kotlin HTTP applications. Prior to 4.51.0.0, 5.42.0.0, and 6.50.0.0, DigestAuthProvider.verify in http4k-security-digest ignores its configured algorithm parameter and verifies every Digest response with hardcoded MD5. Deployments configured for SHA-256 therefore receive weaker MD5-based verification, exposing Digest authentication to collision-related attack paths that depend on the hash function's collision resistance. This issue is fixed in versions 4.51.0.0, 5.42.0.0, and 6.50.0.0."}],"affected":[{"vendor":"http4k","product":"http4k","versions":[{"version":"< 4.51.0.0","status":"affected"},{"version":">= 5.0.0.0, < 5.42.0.0","status":"affected"},{"version":">= 6.0.0.0, < 6.50.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/http4k/http4k/security/advisories/GHSA-vxxm-wwqh-mh47","name":"https://github.com/http4k/http4k/security/advisories/GHSA-vxxm-wwqh-mh47","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/http4k/http4k/commit/65d23d99fc5afbe34f29d8f61d0a003fbebb381c","name":"https://github.com/http4k/http4k/commit/65d23d99fc5afbe34f29d8f61d0a003fbebb381c","tags":["x_refsource_MISC"]},{"url":"https://github.com/http4k/http4k/releases/tag/6.50.0.0","name":"https://github.com/http4k/http4k/releases/tag/6.50.0.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-327","lang":"en","description":"CWE-327: Use of a Broken or Risky Cryptographic Algorithm","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-18T16:10:40.692Z"},"source":{"advisory":"GHSA-vxxm-wwqh-mh47","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-18T17:27:37.221207Z","id":"CVE-2026-54147","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-18T17:28:07.389Z"}}]}}}