CVE-2026-1528

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://cna.openjsf.org/security-advisories.html	Vendor Advisory
https://github.com/nodejs/undici/security/advisories/GHSA-f269-vfmq-vjvj	Vendor Advisory
https://hackerone.com/reports/3537648	Permissions Required

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:nodejs:undici::::::node.js::*
	cpe:2.3:a:nodejs:undici::::::node.js::*

History

No history.

Information

Published : 2026-03-12 21:16

Updated : 2026-03-20 15:41

NVD link : CVE-2026-1528

Mitre link : CVE-2026-1528

CVE.ORG link : CVE-2026-1528

JSON object : View

Products Affected

nodejs

undici

CWE

CWE-248

Uncaught Exception

CWE-1284

Improper Validation of Specified Quantity in Input

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