{"cve":"CVE-2026-54147","nvd":{"published":"2026-09-18T16:17:06.677","modified":"2026-09-24T21:25:27.050","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N","score":6.5},"cwes":["CWE-327"],"references":["https://github.com/http4k/http4k/commit/65d23d99fc5afbe34f29d8f61d0a003fbebb381c","https://github.com/http4k/http4k/releases/tag/6.50.0.0","https://github.com/http4k/http4k/security/advisories/GHSA-vxxm-wwqh-mh47"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:55:23.253742848+00:00"},"epss":{"cve":"CVE-2026-54147","score":0.00255,"percentile":0.17129,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vxxm-wwqh-mh47","url":"https://osv.dev/vulnerability/GHSA-vxxm-wwqh-mh47","summary":"http4k: `DigestAuthProvider.verify` ignored configured algorithm and did not bind to request URI","modified":"2026-08-17T22:11:01.448820Z","packages":[{"ecosystem":"Maven","name":"org.http4k:http4k-security-digest","purl":"pkg:maven/org.http4k/http4k-security-digest","ranges":[">=6.0.0.0 <6.50.0.0"],"fixed":["6.50.0.0"]},{"ecosystem":"Maven","name":"org.http4k:http4k-security-digest","purl":"pkg:maven/org.http4k/http4k-security-digest","ranges":[">=5.0.0.0 <5.42.0.0"],"fixed":["5.42.0.0"]},{"ecosystem":"Maven","name":"org.http4k:http4k-security-digest","purl":"pkg:maven/org.http4k/http4k-security-digest","ranges":["<=4.48.2.0"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}