CVE-2026-107279

Description

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. In 3.0.12, a peer offering only Digest qop=auth-int causes mutual-authentication verification to be skipped. AuthenticatorUtils.computeExpectedRspAuth returns no expected value for auth-int, and Interceptors treats that result as unverifiable but nonfatal, so a response with an invalid rspauth value is accepted. A peer that does not know the shared secret can therefore be accepted as the authenticated server. This issue is fixed in version 3.0.13.

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Weakness Type (CWE)

CWE-303 CWE-303

CWE-757 CWE-757

References

Other References

https://github.com/AsyncHttpClient/async-http-client/commit/a5422493b638226666a1ecb5f82826c7c7845b99 https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.13 https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-qhv6-3pmh-95q4

Frequently Asked Questions

What is CVE-2026-107279? +

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. In 3.0.12, a peer offering only Digest qop=auth-int causes mutual-authentication verification to be skipped. AuthenticatorUtils.computeExpectedRspAuth returns no expected value for auth-int, and Interceptors treats that result as unverifiable but nonfatal, so a response with an invalid rspauth value is accepted. A peer that does not know the shared secret can therefore be accepted as the authenticated server. This issue is fixed in version 3.0.13.

How do I check if I'm vulnerable to CVE-2026-107279? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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