CVE-2026-85720 - Vulnerability details

5.9/10

CVSS 3.1

CVE-2026-85720

resolved Published 2026-09-17 Updated 2026-09-24

NVD

MITRE

OpenCVE

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Vulnerability Data from Dependency-Track

Affected versions

5.7

5.7.2 5.7.1 5.7.0

5.6

5.6.8 5.6.7 5.6.6 5.6.5 5.6.4 5.6.3 5.6.2 5.6.1 5.6.0

5.5

5.5.19 5.5.18 5.5.17 5.5.16 5.5.15 5.5.14 5.5.13 5.5.12 5.5.11 5.5.10 5.5.9 5.5.8 5.5.7 5.5.6 5.5.5 5.5.4 5.5.3 5.5.2 5.5.1 5.5.0

5.4

5.4.13 5.4.12 5.4.11 5.4.10 5.4.9 5.4.8 5.4.7 5.4.6 5.4.5 5.4.4 5.4.3 5.4.2 5.4.1 5.4.0

Fixed in version 5.7.3 No fix yet in 5.6, 5.5, 5.4

Score

5.9 CVSS 3.1 NVD CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.0.0 until 2.16.1 and 3.0.12, a request using an HTTP proxy to reach an HTTPS origin can expose preemptive origin credentials because NettyRequestFactory and NettyRequestSender.sendRequestWithNewChannel attach Authorization to the plaintext CONNECT request before the TLS tunnel exists. Basic or Digest credentials and per-connection NTLM, Kerberos, or SPNEGO tokens intended for the origin are therefore visible to the proxy and to observers on the client-to-proxy hop. The tunneled request still receives origin Authorization after the tunnel is established, while Proxy-Authorization remains on CONNECT for its intended proxy recipient. This issue is fixed in versions 2.16.1 and 3.0.12.

Same vulnerability as

GHSA-xr57-gcx8-52hf resolved according to EUVD-2026-81909

Analysis Read only

State

Justification

Recommandation

Workaround

The analysis can only be edited by the BlueMind security teams: log in.

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