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CVE-2026-23957

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Date: January 21, 2026

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.

Severity Score

Related Resources (5)

https://github.com/lxsmnsyc/seroval
https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060
https://nvd.nist.gov/vuln/detail/CVE-2026-23957
https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-66fc-rw6m-c2q6
https://www.mend.io/vulnerability-database/CVE-2026-23957

Severity Score

Weakness Type (CWE)

Allocation of Resources Without Limits or Throttling

CWE-770

Top Fix

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Upgrade Version

Upgrade to version seroval - 1.4.1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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