CVE-2026-107284 (GCVE-0-2026-107284)

Vulnerability from cvelistv5 – Published: 2026-10-07 21:27 – Updated: 2026-10-08 14:54
VLAI
Title
AsyncHttpClient: WebSocket handshake continues after a failed Sec-WebSocket-Accept check
Summary
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.12 and 2.16.1, WebSocketHandler.upgrade aborts a handshake whose Sec-WebSocket-Accept value is missing or invalid but continues into pipeline installation and onOpen delivery. Frames coalesced with the invalid 101 response can be decoded and delivered from a peer that did not prove the handshake, although the request future fails and the channel closes. This issue is fixed in versions 3.0.12 and 2.16.1.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 14:51 UTC
CWE
  • CWE-345 - Insufficient Verification of Data Authenticity
  • CWE-670 - Always-Incorrect Control Flow Implementation
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7580 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
AsyncHttpClient async-http-client Affected: >= 3.0.0, < 3.0.12
Affected: >= 2.0.0, < 2.16.1
guessed Create a notification for this product.
Show details on NVD website
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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