[Pkg-javascript-devel] Bug#1142271: node-ws: CVE-2026-62389

[Salvatore Bonaccorso]

Source: node-ws
Version: 8.21.0+~cs14.19.1-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/websockets/ws/issues/2331
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for node-ws.

CVE-2026-62389[0]:
| ws before 8.21.1 contains a memory exhaustion vulnerability in
| lib/receiver.js where the fragment guard only triggers when fragment
| count reaches maxFragments, allowing attackers to exhaust memory by
| sending incomplete fragmented WebSocket messages. Attackers can send
| a text frame with FIN=0 followed by continuation frames without
| completing the sequence, causing each fragment to be stored as a
| separate Buffer object with significant overhead, enabling denial of
| service through heap exhaustion.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-62389
    https://www.cve.org/CVERecord?id=CVE-2026-62389
[1] https://github.com/websockets/ws/issues/2331
[2] https://github.com/websockets/ws/commit/f197ac65140920bdcecdab74bfc69c2d7858e55d

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore