CVE-2026-23957
High
Description
seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, overriding encoded array lengths by replacing them with an excessively large value causes the deserialization process to significantly increase processing time. This issue has been fixed in version 1.4.1.
SeverityHigh
CVSS7.5
Exploit probability—
ProductLxsmnsyc Seroval
PublishedJan 22, 2026
First seenJan 22, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- lxsmnsyc seroval1.4.1 or later
- seroval1.4.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| lxsmnsyc seroval | v < 1.4.1 | 1.4.1 |
| serovalnpm | v < 1.4.1 | 1.4.1 |
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