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NVD HIGH: CVE-2026-34043 — Serialize JavaScript to a superset of JSON that includes regular expressions and...

Tuesday, March 31, 2026 at 03:15 AM UTC·Source: NIST NVD

Updated: Monday, April 6, 2026 at 12:17 AM UTC

Executive Summary

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 han

Analysis

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. CVSS Score: 5.9. Published: 2026-03-31T03:15:58.400.

Indicators of Compromise (1)

CVE (1)
CVE-2026-34043
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Mar 31, 2026. Verified by: NIST.

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