CVE Vulnerabilities

CVE-2026-23956

Inefficient Regular Expression Complexity

Published: Jan 22, 2026 | Modified: May 20, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
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seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 0.2.0 through 1.4.0, 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.

Weakness

The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.

Affected Software

NameVendorStart VersionEnd Version
SerovalLxsmnsyc*1.4.1 (excluding)

Potential Mitigations

References