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.
Published: 2026-10-07
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
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Remediation

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History

Thu, 08 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 07 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
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.
Title AsyncHttpClient: Digest mutual authentication is switched off by a peer offering qop=auth-int
Weaknesses CWE-303
CWE-757
References
Metrics cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-08T15:02:48.131Z

Reserved: 2026-10-07T15:53:23.585Z

Link: CVE-2026-107279

cve-icon Vulnrichment

Updated: 2026-10-08T15:00:21.357Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-07T22:17:03.657

Modified: 2026-10-08T20:35:31.200

Link: CVE-2026-107279

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T22:45:17Z

Weaknesses
  • CWE-303

    Incorrect Implementation of Authentication Algorithm

  • CWE-757

    Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')