CVE-2026-23956
7.5 HIGHseroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities
Published: 2026-01-22 · Last updated: 2026-05-20
Severity and scoring
- CVSS
- 7.5 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-1333
Affected products
| Vendor | Product |
|---|---|
| lxsmnsyc | seroval |
Description
seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 0.2.0 through 1.4.0, overriding RegExp serialization with extremely large patterns can exhaust JavaScript runtime memory during deserialization. Additionally, overriding RegExp serialization with patterns that trigger catastrophic backtracking can lead to ReDoS (Regular Expression Denial of Service). This issue has been fixed in version 1.4.1.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-23956
- [Other]https://github.com/lxsmnsyc/seroval/blob/v0.2.0/packages/seroval/src/index.ts#L90
- [Patch]https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060
- [Vendor advisory]https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hx9m-jf43-8ffr
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