CVE-2026-1528

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/12/2026

Last Modified3/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

nodejs:undici

Weaknesses (CWE)

CWE-248CWE-1284

References

https://cna.openjsf.org/security-advisories.html(ce714d77-add3-4f53-aff5-83d477b104bb)

https://github.com/nodejs/undici/security/advisories/GHSA-f269-vfmq-vjvj(ce714d77-add3-4f53-aff5-83d477b104bb)

https://hackerone.com/reports/3537648(ce714d77-add3-4f53-aff5-83d477b104bb)

IOC Correlations

No correlations recorded

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