CVE Watch6 ago 2026

CVE-2026-55688

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. In ver

CVSS

4.0

Medio

EPSS

0.3%

p26

KEV

—

Exploit Today

0-100

Publicado: 1 jul 2026 · Última mod.: 6 ago 2026 · CWE-1275

EPSS · 30d

0.2%EPSS · 30 días0.3%

2026-08-172026-09-14

Descripción técnica

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.

Referencias oficiales

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