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.
Scores
CVSS v3
7.3
EPSS
0.0021
EPSS Percentile
42.9%
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