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.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4
Patch x_refsource_misc
https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060
Scores
CVSS v3
7.3
EPSS
0.0025
EPSS Percentile
15.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1321
Status
published
Products (2)
lxsmnsyc/seroval
< 1.4.1
npm/seroval
0 - 1.4.1npm
Published
Jan 21, 2026
Tracked Since
Feb 18, 2026