CVE-2026-107280

medium

Description

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.

References

https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-f9m8-cv68-674w

https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.13

https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1

https://github.com/AsyncHttpClient/async-http-client/commit/d1f0ccec417092098d40242fee7dfac84bb3c21f

https://github.com/AsyncHttpClient/async-http-client/commit/330267895fe0bdb41bbd027ea6b151d38ee7c23d

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-94639

Details

Source: Mitre, NVD

Published: 2026-10-07

Updated: 2026-10-08

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical

CVSS v4

Base Score: 6.9

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N

Severity: Medium

EPSS

EPSS: 0.0026