{"id":"CVE-2026-107283","summary":"AsyncHttpClient: Digest authentication cnonce generated with a non-cryptographic random source","details":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12  and 2.16.1, Realm.Builder generates the HTTP Digest client nonce with ThreadLocalRandom rather than a cryptographically secure random source. Digest relies on an unpredictable cnonce to resist chosen-plaintext and credential precomputation attacks, so an observer able to infer generator state can reduce the protection of the authentication exchange. This issue is fixed in versions 3.0.12 and 2.16.1.","aliases":["GHSA-mfj3-87qq-382v"],"modified":"2026-10-09T02:49:20.859248414Z","published":"2026-10-07T21:24:56.640Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107283.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-338"]},"references":[{"type":"WEB","url":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1"},{"type":"WEB","url":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.12"},{"type":"ADVISORY","url":"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-mfj3-87qq-382v"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107283.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107283"},{"type":"FIX","url":"https://github.com/AsyncHttpClient/async-http-client/commit/dca2d90db87f0144ea893a6858dca13c426d06b6"},{"type":"FIX","url":"https://github.com/AsyncHttpClient/async-http-client/commit/e1f5fc88fe211d3f64032c33b91093ba3d5e793d"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/asynchttpclient/async-http-client","events":[{"introduced":"9a771c7b40e716ca77a3cad691545b29ff64bfd3"},{"introduced":"b60e5a0d7d989e4a24c13e03ba786c375b727448"},{"fixed":"c07038b44e5206375662b46859672e8f1df9f05a"},{"fixed":"d1f0ccec417092098d40242fee7dfac84bb3c21f"},{"fixed":"dca2d90db87f0144ea893a6858dca13c426d06b6"},{"fixed":"e1f5fc88fe211d3f64032c33b91093ba3d5e793d"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"3.0.0"},{"fixed":"3.0.12"},{"introduced":"2.0.0"},{"fixed":"2.16.1"}]}}],"versions":["async-http-client-project-2.16.0","async-http-client-project-2.15.0","async-http-client-project-3.0.11","async-http-client-project-3.0.10","async-http-client-project-3.0.9","async-http-client-project-2.14.5","async-http-client-project-2.12.4","async-http-client-project-3.0.8","async-http-client-project-3.0.7","async-http-client-project-3.0.6","async-http-client-project-3.0.5","async-http-client-project-3.0.4","async-http-client-project-3.0.3","async-http-client-project-3.0.2","async-http-client-project-2.12.3","async-http-client-project-3.0.1","async-http-client-project-3.0.0","async-http-client-project-2.12.2","async-http-client-project-2.12.1","async-http-client-project-2.12.0","async-http-client-project-2.11.0","async-http-client-project-2.10.5","async-http-client-project-2.10.4","async-http-client-project-2.10.3","async-http-client-project-2.10.2","async-http-client-project-2.10.1","async-http-client-project-2.10.0","async-http-client-project-2.9.0","async-http-client-project-2.8.1","async-http-client-project-2.8.0","async-http-client-project-2.7.0","async-http-client-project-2.6.0","async-http-client-project-2.5.4","async-http-client-project-2.5.3","async-http-client-project-2.5.2","async-http-client-project-2.5.1","async-http-client-project-2.5.0","async-http-client-project-2.4.9","async-http-client-project-2.4.8","async-http-client-project-2.4.7","async-http-client-project-2.4.6","async-http-client-project-2.4.5","async-http-client-project-2.4.4","async-http-client-project-2.4.3","async-http-client-project-2.4.2","async-http-client-project-2.4.1","async-http-client-project-2.4.0","async-http-client-project-2.3.0","async-http-client-project-2.2.1","async-http-client-project-2.2.0","async-http-client-project-2.1.2","async-http-client-project-2.1.1","async-http-client-project-2.1.0","async-http-client-project-2.1.0-RC4","async-http-client-project-2.1.0-RC3","async-http-client-project-2.1.0-RC2","async-http-client-project-2.1.0-RC1","async-http-client-project-2.1.0-alpha26","async-http-client-project-2.1.0-alpha25","async-http-client-project-2.1.0-alpha24","async-http-client-project-2.1.0-alpha23","async-http-client-project-2.1.0-alpha22","async-http-client-project-2.1.0-alpha21","async-http-client-project-2.1.0-alpha20","async-http-client-project-2.1.0-alpha19","async-http-client-project-2.1.0-alpha18","async-http-client-project-2.1.0-alpha17","async-http-client-project-2.1.0-alpha16","async-http-client-project-2.1.0-alpha15","async-http-client-project-2.1.0-alpha14","async-http-client-project-2.1.0-alpha13","async-http-client-project-2.1.0-alpha12","async-http-client-project-2.1.0-alpha11","async-http-client-project-2.1.0-alpha10","async-http-client-project-2.1.0-alpha9","async-http-client-project-2.1.0-alpha8","async-http-client-project-2.1.0-alpha7","async-http-client-project-2.1.0-alpha6","async-http-client-project-2.1.0-alpha5","async-http-client-project-2.1.0-alpha4","async-http-client-project-2.1.0-alpha3","async-http-client-project-2.1.0-alpha2","async-http-client-project-2.0.24","async-http-client-project-2.0.23","async-http-client-project-2.0.22","async-http-client-project-2.0.21","async-http-client-project-2.0.20","async-http-client-project-2.0.19","async-http-client-project-2.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