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AsyncHttpClient 3.x contains an improper authentication vulnerability in SCRAM and HTTP Digest mutual-authentication response handling. In affected releases beginning with 3.0.8 and prior to 3.0.12, the processing of SCRAM ServerSignature and Digest rspauth values computes a verification result but, when the value is invalid, only logs the mismatch and still treats the HTTP response as authenticated. The correction rejects present invalid verification values and uses the Authorization parameters actually transmitted when calculating Digest rspauth. Mutual-authentication verification is not enforced when verification data is absent, request parameters cannot be recovered, or Digest authentication uses qop=auth-int.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A network-accessible vulnerability affecting Canonical Ubuntu Linux LTS releases 14.04, 16.04, 18.04, 20.04, 22.04, 24.04, and 26.04. The supplied CVSS v3.0 vector indicates high attack complexity, no privileges or user interaction required, and low integrity impact.
An authentication-bypass weakness in AsyncHttpClient 3.0.8 through 3.0.11 where invalid SCRAM or Digest mutual-authentication responses are accepted. This can allow an impostor server that does not know the shared secret to be accepted, particularly over non-TLS or compromised transports.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.