CVE-2024-53990: critical vulnerability in AsyncHttpClient async-http-client
AsyncHttpClient (AHC) library's `CookieStore` replaces explicitly defined `Cookie`s
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.2epss 0.7%
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. When making any HTTP request, the automatically enabled and self-managed CookieStore (aka cookie jar) will silently replace explicitly defined Cookies with any that have the same name from the cookie jar. For services that operate with multiple users, this can result in one user's Cookie being used for another user's requests.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
AsyncHttpClient · async-http-clientRelated CVEs — AsyncHttpClient async-http-client
In the same product, most dangerous first.
CVE-2026-85721HIGHAsyncHttpClient: Unbounded HTTP/1.1 response decompression enables a decompression-bomb denial of serviceEPSS 0.6%CVE-2026-85718MEDIUMAsyncHttpClient: Connection permit leak on TLS handshake failure causes per-host denial of serviceEPSS 0.5%CVE-2026-85717MEDIUMAsyncHttpClient: Client-wide realm credentials re-sent to a cross-origin redirect targetEPSS 0.5%CVE-2026-107227HIGHAsyncHttpClient: Unbounded WebSocket permessage-deflate decompression enables a decompression-bomb denial of service when compression is enabledEPSS 0.4%CVE-2026-40490MEDIUMAsyncHttpClient leaks authorization credentials to untrusted domains on cross-origin redirectsEPSS 0.4%CVE-2026-85716LOWAsyncHttpClient: SCRAM and Digest mutual-authentication responses are not verifiedEPSS 0.4%
References
https://github.com/AsyncHttpClient/async-http-client/commit/d5a83362f7aed81b93ebca559746ac9be0f95425https://github.com/AsyncHttpClient/async-http-client/issues/1964https://github.com/AsyncHttpClient/async-http-client/pull/2033https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-mfj5-cf8g-g2fv