Log in Start free

Vulnerability · Published Oct 7, 2026 · Assigned by GitHub_M

CVE-2026-107279AsyncHttpClient: Digest mutual authentication is switched off by a peer offering qop=auth-int

High 8.8

In plain English

A high-severity security flaw in async-http-client from AsyncHttpClient. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 4.0)8.8High
Exploit odds (30 days)0.4%top 70.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Ubuntu:22.04:LTSasync-http-clientno fix listedUBUNTU-CVE-2026-107279
Ubuntu:24.04:LTSasync-http-clientno fix listedUBUNTU-CVE-2026-107279
Ubuntu:26.04:LTSasync-http-clientno fix listedUBUNTU-CVE-2026-107279
Ubuntu:26.10async-http-clientno fix listedUBUNTU-CVE-2026-107279

Affected products (as reported)

VendorProductVersions
AsyncHttpClient async-http-client = 3.0.12

Weakness: CWE-303, CWE-757 · 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

References