VULNERABILITY INTELLIGENCE

CVE-2026-34043

CVSS score5.9 MEDIUM
EPSS probability0.49%
CISA KEVNot currently listed
Published2026-03-31
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted "array-like" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.

Weakness classification

  • security-advisories@github.com: CWE-400

Primary references