{"id":"CVE-2026-100834","summary":"http4k before 6.48.0.0 Digest Authentication Replay Protection Bypass","details":"http4k's Digest authentication module (org.http4k:http4k-security-digest) before versions 6.48.0.0, 5.42.0.0 and 4.51.0.0 defaults the nonceVerifier parameter of ServerFilters.DigestAuth and DigestAuthProvider to { true }, so every nonce is accepted regardless of its value, age, or prior use. Applications relying on this default have no replay protection on Digest authentication: an attacker who can capture a valid 'Authorization: Digest' response (for example by observing network traffic or reading logs) can replay it indefinitely against the same protected resource.","aliases":["GHSA-c7jm-38gq-h67h"],"modified":"2026-09-28T03:48:31.941189521Z","published":"2026-09-27T01:28:32.781Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-294"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100834.json","unresolved_ranges":[{"extracted_events":[{"fixed":"4.51.0.0"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100834.json"},{"type":"ADVISORY","url":"https://github.com/http4k/http4k/security/advisories/GHSA-c7jm-38gq-h67h"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100834"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/http4k-before-6.48.0.0-digest-authentication-replay-protection-bypass"},{"type":"FIX","url":"https://github.com/http4k/http4k/commit/4f904b4692"},{"type":"FIX","url":"https://github.com/http4k/http4k/commit/8a52b615b1"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/http4k/http4k","events":[{"introduced":"0"},{"fixed":"7adc55e0662f69a6ca111094cf5e04a88da8d87c"},{"fixed":"e41f40814305510d4f82e30bb0bcd12b9928292e"},{"fixed":"4f904b4692"},{"fixed":"8a52b615b1"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"6.48.0.0"},{"fixed":"5.42.0.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["6.47.2.0","6.47.1.0","6.47.0.0","6.46.1.0","6.46.0.0","6.45.1.0","6.45.0.0","6.44.0.0","6.43.0.0","6.42.0.0","6.41.0.0","6.40.1.0","6.40.0.0","6.39.1.0","6.39.0.0","6.38.0.0","6.37.0.0","6.36.0.0","6.35.0.0","6.34.0.0","6.33.0.0","6.32.0.0","6.31.1.0","6.31.0.0","6.30.1.0","6.30.0.0","6.29.0.0","6.28.1.0","6.28.0.0","6.27.0.0","6.26.1.0","6.26.0.0","6.25.1.0","6.25.0.0","6.24.1.0","6.24.0.0","6.23.1.0","6.23.0.0","6.22.0.0","6.21.1.0","6.21.0.0","6.20.2.1","6.20.2.0","6.20.1.0","6.20.0.3","6.20.0.2","6.20.0.1","6.20.0.0","6.19.0.0","6.18.1.0","6.18.0.1","6.17.0.0","6.16.0.0","6.15.1.0","6.15.0.1","6.15.0.0","6.14.0.0","6.13.0.0","6.12.0.0","6.11.1.0","6.11.0.0","6.10.2.0","6.10.1.0","6.10.0.0","6.9.2.0","6.9.1.0","6.9.0.0","6.8.1.0","6.8.0.0","6.7.0.0","6.6.1.0","6.6.0.1","6.6.0.0","6.5.6.1","6.5.6.0","6.5.5.1","6.5.5.0","6.5.4.0","6.5.3.0","6.5.2.0","6.5.1.0","6.5.0.0","6.4.1.0","v6.4.1.0","6.4.0.0","v6.3.0.0","6.2.0.0","6.1.0.1","6.1.0.0","6.0.1.0","5.47.0.0","6.0.0.0","5.46.0.0","5.45.2.0","5.45.1.0","5.45.0.0","5.44.3.0","5.44.2.0","5.44.1.0","5.44.0.0","5.43.0.0","5.42.0.0","5.41.0.0","5.40.0.0","5.39.0.0","5.38.0.0","5.37.1.1","5.37.1.0","5.37.0.0","5.36.0.0","5.35.5.0","5.35.4.0","5.35.3.0","5.35.2.0","5.35.1.0","5.35.0.0","5.34.1.0","5.34.0.0","5.33.1.0","5.33.0.1","0.0.0","5.33.0.0","5.32.4.0","5.32.3.0","5.32.2.0","5.32.1.0","5.32.0.0","5.31.1.0","5.31.0.0","5.30.1.0","5.30.0.0","5.29.0.0","5.28.1.0","5.28.0.0","5.27.0.0","5.26.1.0","5.26.0.0","5.25.1.0","5.25.0.0","5.24.1.0","5.24.0.0","5.23.0.0","5.22.0.0","5.21.2.0","5.21.1.0","5.21.0.0","5.20.0.0","5.19.0.0","5.18.2.0","5.18.1.0","5.17.0.0","5.16.2.0","5.16.1.0","5.16.0.0","5.15.0.0","5.14.5.0","5.14.4.0","5.14.2.0","5.14.1.0","5.14.0.0","5.13.9.0","5.13.8.0","5.13.7.0","5.13.6.1","5.13.6.0","5.13.5.0","5.13.4.1","5.13.4.0","5.13.2.0","5.13.1.0","5.13.0.1","5.13.0.0","5.12.2.1","5.12.2.0","5.12.1.0","5.12.0.0","5.11.1.0","5.11.0.0","5.10.7.0","5.10.6.0","5.10.5.0","5.10.4.0","5.10.3.0","5.10.2.0","5.10.1.0","5.10.0.0","5.9.0.0","5.8.6.0","5.8.5.1","5.8.5.0","5.8.4.0","5.8.3.0","5.8.2.0","5.8.1.0","5.8.0.0","5.7.5.0","5.7.4.0","5.7.3.0","5.7.2.0","5.7.1.0","5.6.5.0","5.6.4.0","5.6.3.0","5.6.2.1","5.6.2.0","5.6.1.0","5.6.0.0","5.5.0.0","5.4.1.0","5.4.0.0","5.3.0.0","5.2.1.0","5.2.0.0","5.1.2.1","5.1.2.0","5.1.1.1","5.1.1.0","5.1.0.0","5.0.0.0","4.48.0.0","4.47.2.0","4.47.1.0","4.46.0.0","4.45.0.0","4.44.1.0","4.44.0.0","4.43.1.0","4.43.0.0","4.42.1.0","4.42.0.0","4.41.4.0","4.41.3.0","4.41.2.0","4.41.1.1","4.41.1.0","4.41.0.0","4.40.2.0","4.40.1.0","4.40.0.0","4.39.0.0","4.38.0.1","4.38.0.0","4.37.0.0","4.36.0.0","4.35.4.0","4.35.3.0","4.35.2.0","4.35.1.0","4.35.0.0","4.34.4.0","4.34.3.1","4.34.3.0","4.34.2.0","4.34.1.0","4.34.0.4","4.34.0.3","4.34.0.2","4.34.0.1","4.34.0.0","4.33.3.0","4.33.2.1","4.33.2.0","4.33.1.0","4.33.0.0","4.32.4.0","4.32.3.0","4.32.2.0","4.32.1.0","4.32.0.0","4.31.0.0","4.30.10.0","4.30.9.0","4.30.8.0","4.30.7.0","4.30.6.0","4.30.5.0","4.30.4.0","4.30.3.0","4.30.2.1","4.30.2.0","4.30.0.0","4.29.1.0","4.29.0.0","4.28.2.0","4.28.1.0","4.28.0.0","4.27.4.0","4.27.3.0","4.27.2.0","4.27.1.0","4.27.0.0","4.26.0.0","4.25.16.2","4.25.16.1","4.25.16.0","4.25.15.0","4.25.14.0","4.25.13.0","4.25.12.0","4.25.11.0","4.25.10.1","4.25.10.0","4.25.9.0","4.25.8.0","4.25.7.0","4.25.6.0","4.25.5.2","4.25.5.1","4.25.5.0","4.25.4.1","4.25.4.0","4.25.3.0","4.25.2.0","4.25.1.0","4.25.0.0","4.24.0.0","4.23.0.0","4.22.0.1","4.22.0.0","4.21.1.1","4.21.1.0","4.21.0.0","4.20.2.0","4.20.1.0","4.20.0.0","4.19.5.0","4.19.4.0","4.19.3.0","4.19.2.0","4.19.1.0","4.19.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