AsyncHttpClient async-http-client up to 2.16.0/3.0.12 ThreadSafeCookieStore cross-domain policy

Summaryinfo

A vulnerability classified as problematic has been found in AsyncHttpClient async-http-client up to 2.16.0/3.0.12. Affected is an unknown function of the component ThreadSafeCookieStore. This manipulation causes cross-domain policy. This vulnerability appears as CVE-2026-107280. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in AsyncHttpClient async-http-client up to 2.16.0/3.0.12 and classified as problematic. Affected by this vulnerability is some unknown processing of the component ThreadSafeCookieStore. The manipulation with an unknown input leads to a cross-domain policy vulnerability. The CWE definition for the vulnerability is CWE-942. The product uses a cross-domain policy file that includes domains that should not be trusted. As an impact it is known to affect confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-107280 since 10/07/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.16.1 or 3.0.13 eliminates this vulnerability.

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Productinfo

Vendor

• AsyncHttpClient

Name

• async-http-client

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16.0
• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.10
• 3.0.11
• 3.0.12

Website

• Product: https://github.com/AsyncHttpClient/async-http-client/

CPE 2.3info

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