CVE-2026-107280

The AsyncHttpClient (AHC) library for Java applications is vulnerable to a cookie injection or overwriting issue in versions prior to 3.0.13 and 2.16.1 . The root cause is that the ThreadSafeCookieStore component validates Domain attributes using domain matching but fails to reject public suffixe...

CVE-2026-107229

The AsyncHttpClient (AHC) library for Java applications contains a vulnerability in the ThreadSafeCookieStore component. From version 2.16.0 until 3.0.14 , the library incompletely validates cookie Domain attributes due to missing private-section and public-suffix rules, lack of A-label normaliza...

AsyncHttpClient stores cookie for an unrelated domain (cookie tossing) via ThreadSafeCookieStore

Impact A cookie tossing / cookie injection issue CWE-1275. ThreadSafeCookieStore stored a cookie under the value of its Domain attribute without verifying that the responding host is allowed to set a cookie for that domain RFC 6265 §5.3 step 6. A host the client connects to can therefore plant a...

GHSA-M452-Q8C9-RG2F AsyncHttpClient stores cookie for an unrelated domain (cookie tossing) via ThreadSafeCookieStore

Impact A cookie tossing / cookie injection issue CWE-1275. ThreadSafeCookieStore stored a cookie under the value of its Domain attribute without verifying that the responding host is allowed to set a cookie for that domain RFC 6265 §5.3 step 6. A host the client connects to can therefore plant a...

USN-8655-1: AsyncHttpClient vulnerability

It was discovered that AsyncHttpClient did not properly verify that the responding host was allowed to set cookies for a given domain in its ThreadSafeCookieStore. An attacker could use this to plant cookies scoped to unrelated domains, which would then be sent on later requests to those domains...

USN-8655-1 async-http-client vulnerability

It was discovered that AsyncHttpClient did not properly verify that the responding host was allowed to set cookies for a given domain in its ThreadSafeCookieStore. An attacker could use this to plant cookies scoped to unrelated domains, which would then be sent on later requests to those domains...

CVE-2026-55688: Sensitive Cookie with Improper SameSite Attribute

The AsyncHttpClient AHC library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. In versions from 2.0.0 prior to 2.16.0 and from 3.0.0.Beta1 prior to 3.0.11, ThreadSafeCookieStore stored a cookie under the value of its Domain attribute without...

PT-2026-54858

Name of the Vulnerable Software and Affected Versions AsyncHttpClient versions 2.0.0 through 2.15.9 AsyncHttpClient versions 3.0.0.Beta1 through 3.0.10 Description The ThreadSafeCookieStore component fails to verify if a responding host is authorized to set a cookie for a specific domain before...