CVE-2026-23736 HIGH

CVE-2026-23736: seroval Affected by Prototype Pollution via JSON Deserialization

Vendor Lxsmnsyc
Product seroval
Weakness CWE-1321
Published January 21, 2026
Last update January 22, 2026
View on NVD All CVEs

CVSS base score

7.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, due to improper input validation, a malicious object key can lead to prototype pollution during JSON deserialization. This vulnerability affects only JSON deserialization functionality. This issue is fixed in version 1.4.1.

Key dates

02Disclosure timeline

January 21, 2026 CVE published
January 22, 2026 Record updated