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7.5highHigh

CVE-2026-1528

Nodejs Undici

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.

Exploitation status

  • A vendor advisory or patch reference has been published.

What the metrics mean

  • It is reachable over a network, without needing local access.
  • For an attacker who can reach it, no special conditions are needed to exploit it.
  • To exploit it, no account is needed.
  • Beyond that, no action by a user is required.

Scoring

CVSS
7.5 (v3.1)
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-248
Assigned by
ce714d77-add3-4f53-aff5-83d477b104bb

Dates

Published
2026-03-12
Last modified
2026-09-04
Sources
NVD

Affected products

  • Nodejs Undici- 6.24.0, 7.0.0 - 7.24.0

As listed in the NVD configuration data. Not a statement about your estate.

References