https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-29T03:33:56.250977+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-55688 CVE-2026-55688 — AsyncHttpClient: Cookie stored for an unrelated domain (cookie tossing) via ThreadSafeCookieStore 2026-09-29T03:33:56.253201+00:00

Affected: AsyncHttpClient async-http-client

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 verifying that the responding host is allowed to set a cookie for that domain, leading to a cookie tossing / cookie injection issue. A host the client connects to can therefore plant a cookie scoped to an unrelated domain, and the client will then send that cookie on later requests to that domain. Applications that use a single AsyncHttpClient instance - and thus the default, shared CookieStore - to reach both an attacker-influenced host and a trusted host are impacted. This issue has been fixed in versions 2.16.0 and 3.0.11.

 https://vulnerability.circl.lu/vuln/usn-8655-1 USN-8655-1 — async-http-client vulnerability 2026-09-29T03:33:56.253327+00:00

Affected: Ubuntu:Pro:20.04:LTS: async-http-client, Ubuntu:22.04:LTS: async-http-client, Ubuntu:24.04:LTS: async-http-client, Ubuntu:26.04:LTS: async-http-client

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.