CVE catalog

CVE-2026-107284

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 hand

[CVE catalog]

Severity
Low · CVSS 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Published
Updated
Source
[NVD] · [CVE record]
EPSS
0.14% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianasync-http-clientsid2.12.3-1vulnerable
Debianasync-http-clientbookworm2.12.3-1vulnerable
Debianasync-http-clientbookworm-security2.12.3-1+deb12u1vulnerable

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianasync-http-clientsourcesid(unfixed)not yet assignedNot reported[1150331]
Debianasync-http-clientsourcebookworm(unfixed)not yet assignedNot reported[1150331]

[Debian bug #1150331]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [libasync-http-client-java]Affected

    Source package: [async-http-client]

    Details (4)

    • 2.12.3-1 · all · bookworm

      Affected

      nvd · async-http-client · debian · bookworm; nvd · async-http-client · debian · 12

    • 2.12.3-1 · all · bookworm

      Affected

      nvd · async-http-client · debian · bookworm; nvd · async-http-client · debian · 12

    • 2.12.3-1+deb12u1 · all · bookworm-security

      Affected

      nvd · async-http-client · debian · bookworm; nvd · async-http-client · debian · 12

    • 2.12.3-1+deb12u1 · all · bookworm-security

      Affected

      nvd · async-http-client · debian · bookworm; nvd · async-http-client · debian · 12

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]