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OpenAdvisories
High · 7.5 CVE-2026-23956 EUVD-2026-3669GHSA-hx9m-jf43-8ffr

seroval affected by Denial of Service via RegExp serialization

Published Jan 22, 2026 · Updated May 20, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
lxsmnsyc seroval >= 0.2.0, < 1.4.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm seroval >= 0.2.0, < 1.4.1 1.4.1 GHSA-hx9m-jf43-8ffr

References