CVE-2026-23956

HIGH

7.5

Description

seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, overriding RegExp serialization with extremely large patterns can exhaust JavaScript runtime memory during deserialization. Additionally, overriding RegExp serialization with patterns that trigger catastrophic backtracking can lead to ReDoS (Regular Expression Denial of Service). This issue has been fixed in version 1.4.1.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/22/2026

Last Modified2/27/2026

Sourcenvd

Honeypot Sightings0

Affected Products

lxsmnsyc:seroval

Weaknesses (CWE)

CWE-1333

References

https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060(security-advisories@github.com)

https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hx9m-jf43-8ffr(security-advisories@github.com)

IOC Correlations

No correlations recorded

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