{"id":"UBUNTU-CVE-2026-107283","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.","modified":"2026-10-08T19:47:06.650388224Z","published":"2026-10-08T00:00:00Z","upstream":["CVE-2026-107283"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-107283"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-107283"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-mfj3-87qq-382v"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/commit/e1f5fc88fe211d3f64032c33b91093ba3d5e793d"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/commit/dca2d90db87f0144ea893a6858dca13c426d06b6"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/commit/e1f5fc88fe211d3f64032c33b91093ba3d5e793d"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.12"}],"affected":[{"package":{"name":"async-http-client","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.5-1","1.6.5-2","1.6.5-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.5-2ubuntu0.1~esm1","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107283.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.5-4"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.5-4","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107283.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.5-4","1.6.5-5"],"ecosystem_specific":{"binaries":[{"binary_name":"libasync-http-client-java","binary_version":"1.6.5-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107283.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6.0-1","2.6.0-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libasync-http-client-java","binary_version":"2.6.0-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107283.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.2-1","2.12.3-1","2.12.3-1ubuntu0.22.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libasync-http-client-java","binary_version":"2.12.3-1ubuntu0.22.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107283.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.3-1","2.12.3-1ubuntu0.24.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libasync-http-client-java","binary_version":"2.12.3-1ubuntu0.24.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107283.json"}},{"package":{"name":"async-http-client","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/async-http-client?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.3-1","2.12.3-1ubuntu1","2.12.3-1ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.12.3-1ubuntu1.1","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107283.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}