Detections
Analytics
CVE-2026-1528
high
Description
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.
References
https://hackerone.com/reports/3537648
https://github.com/nodejs/undici/security/advisories/GHSA-f269-vfmq-vjvj