CVE-2026-34043

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

5.9 / 10

Vector String

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

Vulnerability 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.

Vulnerability Details

Published Date

March 27, 2026

Last Modified

April 03, 2026

CWE ID

CWE-400

Source

GitHub

Vendor

npm

Product

serialize-javascript

External References

https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-qj8w-gfj5-8c6v
https://github.com/yahoo/serialize-javascript/commit/f147e90269b58bb6e539cfdf3d0e20d6ad14204b
https://github.com/yahoo/serialize-javascript/releases/tag/v7.0.5
https://github.com/advisories/GHSA-qj8w-gfj5-8c6v

CVE-2026-34043

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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