CVE-2026-23736

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.

PUBLISHED Reserved 2026-01-15 | Published 2026-01-21 | Updated 2026-01-22 | Assigner GitHub_M

Problem types

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Product status

References

github.com/...eroval/security/advisories/GHSA-hj76-42vx-jwp4

github.com/...ommit/ce9408ebc87312fcad345a73c172212f2a798060

cve.org (CVE-2026-23736)

nvd.nist.gov (CVE-2026-23736)

Download JSON