CVE-2026-107232
Description
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12 on 3.x and 2.16.1 on 2.x, the client infers that an HTTP proxy tunnel exists from the last request method rather than the CONNECT result. After a proxy rejects CONNECT, redirect or authentication handlers can write an origin request and its Authorization credentials onto the still-plaintext proxy connection. Basic credentials can be recovered directly, while NTLM responses may be cracked or relayed. This issue is fixed in versions 3.0.12 and 2.16.1.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://github.com/AsyncHttpClient/async-http-client/commit/3a625cb892233c0a6653ac68823a25ffbc80f393
- https://github.com/AsyncHttpClient/async-http-client/commit/a87e7b8c81a6f66a4ce23cd43097fbadd1c788ea
- https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1
- https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.12
- https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-v9f2-7rw2-gr2x
CWEs
CWE-319 CWE-441 CWE-522
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.