CVE-2026-1528highCWE-1284 CWE-248

undici is vulnerable to Malicious WebSocket 64-bit length overflows undici parser and crashes the client

21Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 7.5epss 0.5%

probabilidad de explotación

0.5%top 61% de las CVE

explotación observada

noninguna fuente lo reporta

ImpactA server can reply with a WebSocket frame using the 64-bit length form and an extremely large length. undici's ByteParser overflows internal math, ends up in an invalid state, and throws a fatal TypeError that terminates the process. Patches Patched in the undici version v7.24.0 and v6.24.0. Users should upgrade to this version or later.

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

Productos afectados

undici · undici

Referencias