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Advisory record · GHSA-3wp9-xfwm-rjjf

AsyncHttpClient: WebSocket proxy credentials sent to the origin server over a CONNECT tunnel

CVSS 5.9 MediumEPSS 0.0021 · 10th percentile

Published by the GitHub Advisory Database at 8 Oct 2026, 16:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.asynchttpclient:async-http-clientMaven>=3.0.0, <3.0.12 || >=2.0.0, <2.16.13.0.12, 2.16.1
Identifiers
GHSA-3wp9-xfwm-rjjf · CVE-2026-107285
Weakness (CWE)
CWE-319 · CWE-522
Tags
Published
8 Oct 2026
Updated
8 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

async-http-client versions 3.0.0 to before 3.0.12 and 2.0.0 to before 2.16.1 are affected. When a ws:// request goes through an HTTP proxy with authentication, the proxy credentials are sent to the origin server in the tunnelled WebSocket upgrade request, which lets that server recover them. Upgrade to 3.0.12 or 2.16.1.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.9 Medium 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0021, the 10th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.