All vulnerabilities
CVE-2026-107283GHSA-mfj3-87qq-382v

org.asynchttpclient:async-http-client: AsyncHttpClient: Digest authentication cnonce generated with a non-cryptographic random source

AsyncHttpClient org.asynchttpclient:async-http-clientmavenLibraries & packages
Open in ThreatlineRecord JSON
CVSS
3.7Low
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.26%Chance of exploitation activity in the next 30 days, higher than 17% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3.0.12Also 2.16.1GitHub
Published7 Oct 2026Updated 8 Oct 2026CVE List

What fixes it

  • 3.0.12org.asynchttpclient:async-http-client, mavenGitHub<dependency><groupId>org.asynchttpclient</groupId><artifactId>async-http-client</artifactId><version>3.0.12</version></dependency>
  • 2.16.1org.asynchttpclient:async-http-client, mavenGitHub<dependency><groupId>org.asynchttpclient</groupId><artifactId>async-http-client</artifactId><version>2.16.1</version></dependency>
  • 3.0.12org.asynchttpclient:async-http-client, MavenOSV<dependency><groupId>org.asynchttpclient</groupId><artifactId>async-http-client</artifactId><version>3.0.12</version></dependency>
  • 2.16.1org.asynchttpclient:async-http-client, MavenOSV<dependency><groupId>org.asynchttpclient</groupId><artifactId>async-http-client</artifactId><version>2.16.1</version></dependency>

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Impact

The client nonce used in HTTP Digest authentication was generated from ThreadLocalRandom, a fast but non-cryptographic pseudorandom number generator. RFC 7616 section 3.3 requires the cnonce to be unpredictable, since it is part of what protects the Digest exchange against chosen-plaintext and precomputation attacks on the credentials. An attacker able to observe or influence enough of the generator's output could reduce the unpredictability the protocol depends on. NTLM (and, on the 3.x line, SCRAM) in this client already use SecureRandom for their own nonces; Digest did not.

Affected versions

  • 3.x: up to and including 3.0.11
  • 2.x: up to and including 2.16.0

Patches

Fixed in 3.0.12 on the 3.x line and in 2.16.1 on the 2.x line. The cnonce is now generated with SecureRandom, matching the other authentication schemes in the client.

Workarounds

None available from application code.

Details

Realm.Builder's cnonce generation seeded its bytes from ThreadLocalRandom.current() rather than a SecureRandom instance.

Text from GitHub Advisory Database

Affected versions 68

  • org.asynchttpclient:async-http-client, maven>= 3.0.0, <= 3.0.11GitHub
  • org.asynchttpclient:async-http-client, maven>= 2.0.0, <= 2.16.0GitHub
  • async-http-clientaffected: >= 3.0.0, < 3.0.12CVE List
  • async-http-clientaffected: >= 2.0.0, < 2.16.1CVE List
  • org.asynchttpclient:async-http-client, Mavenfrom 3.0.0, fixed in 3.0.12OSV
  • org.asynchttpclient:async-http-client, Maven3.0.0OSV
  • org.asynchttpclient:async-http-client, Maven3.0.1OSV
  • org.asynchttpclient:async-http-client, Maven3.0.10OSV
  • org.asynchttpclient:async-http-client, Maven3.0.11OSV
  • org.asynchttpclient:async-http-client, Maven3.0.2OSV
  • org.asynchttpclient:async-http-client, Maven3.0.3OSV
  • org.asynchttpclient:async-http-client, Maven3.0.4OSV
  • org.asynchttpclient:async-http-client, Maven3.0.5OSV
  • org.asynchttpclient:async-http-client, Maven3.0.6OSV
  • org.asynchttpclient:async-http-client, Maven3.0.7OSV
  • org.asynchttpclient:async-http-client, Maven3.0.8OSV
  • org.asynchttpclient:async-http-client, Maven3.0.9OSV
  • org.asynchttpclient:async-http-client, Mavenfrom 2.0.0, fixed in 2.16.1OSV
  • org.asynchttpclient:async-http-client, Maven2.0.0OSV
  • org.asynchttpclient:async-http-client, Maven2.0.1OSV
  • org.asynchttpclient:async-http-client, Maven2.0.10OSV
  • org.asynchttpclient:async-http-client, Maven2.0.11OSV
  • org.asynchttpclient:async-http-client, Maven2.0.12OSV
  • org.asynchttpclient:async-http-client, Maven2.0.13OSV
  • org.asynchttpclient:async-http-client, Maven2.0.14OSV
  • org.asynchttpclient:async-http-client, Maven2.0.15OSV
  • org.asynchttpclient:async-http-client, Maven2.0.16OSV
  • org.asynchttpclient:async-http-client, Maven2.0.17OSV
  • org.asynchttpclient:async-http-client, Maven2.0.18OSV
  • org.asynchttpclient:async-http-client, Maven2.0.19OSV
  • org.asynchttpclient:async-http-client, Maven2.0.2OSV
  • org.asynchttpclient:async-http-client, Maven2.0.20OSV
  • org.asynchttpclient:async-http-client, Maven2.0.21OSV
  • org.asynchttpclient:async-http-client, Maven2.0.22OSV
  • org.asynchttpclient:async-http-client, Maven2.0.23OSV
  • org.asynchttpclient:async-http-client, Maven2.0.24OSV
  • org.asynchttpclient:async-http-client, Maven2.0.25OSV
  • org.asynchttpclient:async-http-client, Maven2.0.26OSV
  • org.asynchttpclient:async-http-client, Maven2.0.27OSV
  • org.asynchttpclient:async-http-client, Maven2.0.28OSV
  • org.asynchttpclient:async-http-client, Maven2.0.29OSV
  • org.asynchttpclient:async-http-client, Maven2.0.3OSV
  • org.asynchttpclient:async-http-client, Maven2.0.30OSV
  • org.asynchttpclient:async-http-client, Maven2.0.31OSV
  • org.asynchttpclient:async-http-client, Maven2.0.32OSV
  • org.asynchttpclient:async-http-client, Maven2.0.33OSV
  • org.asynchttpclient:async-http-client, Maven2.0.34OSV
  • org.asynchttpclient:async-http-client, Maven2.0.35OSV
  • org.asynchttpclient:async-http-client, Maven2.0.36OSV
  • org.asynchttpclient:async-http-client, Maven2.0.37OSV
  • org.asynchttpclient:async-http-client, Maven2.0.38OSV
  • org.asynchttpclient:async-http-client, Maven2.0.39OSV
  • org.asynchttpclient:async-http-client, Maven2.0.4OSV
  • org.asynchttpclient:async-http-client, Maven2.0.40OSV
  • org.asynchttpclient:async-http-client, Maven2.0.5OSV
  • org.asynchttpclient:async-http-client, Maven2.0.6OSV
  • org.asynchttpclient:async-http-client, Maven2.0.7OSV
  • org.asynchttpclient:async-http-client, Maven2.0.8OSV
  • org.asynchttpclient:async-http-client, Maven2.0.9OSV
  • org.asynchttpclient:async-http-client, Maven2.1.0OSV
  • org.asynchttpclient:async-http-client, Maven2.1.0-RC1OSV
  • org.asynchttpclient:async-http-client, Maven2.1.0-RC2OSV
  • org.asynchttpclient:async-http-client, Maven2.1.0-RC3OSV
  • org.asynchttpclient:async-http-client, Maven2.1.0-RC4OSV
  • org.asynchttpclient:async-http-client, Maven2.1.0-alpha1OSV
  • org.asynchttpclient:async-http-client, Maven2.1.0-alpha10OSV
  • org.asynchttpclient:async-http-client, Maven2.1.0-alpha11OSV
  • org.asynchttpclient:async-http-client, Maven2.1.0-alpha12OSV

References 7