CVE-2026-23736

Published: Jan 21, 2026Modified: Jun 17, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

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.

Affected (1)

Products: Lxsmnsyc: Seroval

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Lxsmnsyc Seroval	Before 1.4.1

Related CWEs

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

References (2)

https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060

Source: security-advisories@github.com

Patch

https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4

Source: security-advisories@github.com

Vendor Advisory

Timeline

No history available yet.