CVE-2026-107280
AsyncHttpClient: Cookie Domain attribute is not checked against the public suffix list, so a cookie can be set for co.uk
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1275 |
| Vendor | asynchttpclient |
| Product | async-http-client |
| Published | Oct 7, 2026 |
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Affected Versions
AsyncHttpClient / async-http-client
>= 3.0.0, < 3.0.13 >= 2.0.0, < 2.16.1
References
github.com: https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-f9m8-cv68-674w github.com: https://github.com/AsyncHttpClient/async-http-client/commit/330267895fe0bdb41bbd027ea6b151d38ee7c23d github.com: https://github.com/AsyncHttpClient/async-http-client/commit/d1f0ccec417092098d40242fee7dfac84bb3c21f github.com: https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1 github.com: https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.13