CVE-2026-23957

HIGH

seroval < 1.4.1 - Denial of Service via Array Length Manipulation

Title source: llm
STIX 2.1

Description

seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, overriding encoded array lengths by replacing them with an excessively large value causes the deserialization process to significantly increase processing time. This issue has been fixed in version 1.4.1.

References (2)

Core 2

Scores

CVSS v3 7.5
EPSS 0.0040
EPSS Percentile 31.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (2)
lxsmnsyc/seroval < 1.4.1 (2 CPE variants)
npm/seroval 0 - 1.4.1npm
Published Jan 22, 2026
Tracked Since Feb 18, 2026