CVE-2026-1528
JavaScript vulnerability analysis and mitigation

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.


SourceNVD

Related JavaScript vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

GHSA-68qg-g8mg-6pr7CRITICAL10
  • JavaScriptJavaScript
  • @paperclipai/server
NoYesApr 10, 2026
GHSA-jvff-x2qm-6286HIGH8.8
  • JavaScriptJavaScript
  • mathjs
NoYesApr 10, 2026
GHSA-75hx-xj24-mqrwHIGH8.2
  • JavaScriptJavaScript
  • n8n-mcp
NoYesApr 10, 2026
CVE-2026-40299MEDIUM6.9
  • JavaScriptJavaScript
  • next-intl
NoYesApr 10, 2026
GHSA-x7mm-9vvv-64w8LOW2.3
  • JavaScriptJavaScript
  • unhead
NoYesApr 10, 2026

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management