CVE-2026-23736

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.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060	Patch
https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:lxsmnsyc:seroval:*:*:*:*:*:node.js:*:*

History

17 Jun 2026, 10:22

Type	Values Removed	Values Added
Summary		(es) seroval facilita la serialización de valores JS, incluyendo estructuras complejas más allá de las capacidades de JSON.stringify. En las versiones 1.4.0 y anteriores, debido a una validación de entrada inadecuada, una clave de objeto maliciosa puede conducir a la contaminación de prototipos durante la deserialización JSON. Esta vulnerabilidad afecta solo a la funcionalidad de deserialización JSON. Este problema se ha solucionado en la versión 1.4.1.

27 Feb 2026, 19:36

Type	Values Removed	Values Added
References	~~() https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060 -~~	() https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060 - Patch
References	~~() https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4 -~~	() https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4 - Vendor Advisory
CPE		cpe:2.3:a:lxsmnsyc:seroval::::::node.js::*
First Time		Lxsmnsyc seroval Lxsmnsyc

21 Jan 2026, 23:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-21 23:15

Updated : 2026-06-17 10:22

NVD link : CVE-2026-23736

Mitre link : CVE-2026-23736

CVE.ORG link : CVE-2026-23736

JSON object : View

Products Affected

lxsmnsyc

seroval

CWE

CWE-1321

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

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