{"id":"UBUNTU-CVE-2026-107280","details":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.13  and 2.16.1, ThreadSafeCookieStore validates Domain attributes with domain matching but does not reject public suffixes. A host beneath a suffix such as co.uk can set a cookie for that suffix, after which the shared cookie store sends it to unrelated hosts under the suffix. This can inject or overwrite session-relevant cookie values across origins. This issue is fixed in versions 3.0.13 and 2.16.1.","modified":"2026-10-08T19:47:05.190541275Z","published":"2026-10-08T00:00:00Z","upstream":["CVE-2026-107280"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-107280"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-107280"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-f9m8-cv68-674w"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/commit/d1f0ccec417092098d40242fee7dfac84bb3c21f"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/commit/330267895fe0bdb41bbd027ea6b151d38ee7c23d"},{"type":"REPORT","url":"https://github.com/AsyncHttpClient/async-http-client/commit/d1f0ccec417092098d40242fee7dfac84bb3c21f"},{"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-3.0.13"}],"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-2026-107280.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-2026-107280.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-2026-107280.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_version":"2.6.0-1ubuntu0.1~esm1","binary_name":"libasync-http-client-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107280.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-2026-107280.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-2026-107280.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_name":"libasync-http-client-java","binary_version":"2.12.3-1ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107280.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N"},{"type":"Ubuntu","score":"medium"}]}