CVE-2026-34043

MEDIUM

5.9

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.

CVE Details

CVSS v3.1 Score5.9

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published3/31/2026

Last Modified4/3/2026

Sourcenvd

Honeypot Sightings0

Affected Products

yahoo:serialize

Weaknesses (CWE)

CWE-400CWE-834

References

https://github.com/yahoo/serialize-javascript/commit/f147e90269b58bb6e539cfdf3d0e20d6ad14204b(security-advisories@github.com)

https://github.com/yahoo/serialize-javascript/releases/tag/v7.0.5(security-advisories@github.com)

https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-qj8w-gfj5-8c6v(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.