Excessive Processing Time Vulnerability in Seroval by LXSMNSYC
CVE-2026-23957

7.5HIGH

Key Information:

Vendor

Lxsmnsyc

Status
Seroval
Vendor
CVE Published:
22 January 2026

What is CVE-2026-23957?

The Seroval library, developed by LXSMNSYC, has a vulnerability in its JS value stringification process. Specifically, versions up to 1.4.0 are susceptible to excessive processing delays caused by manipulated encoded array lengths that exceed normal values. This manipulation results in significant performance degradation during the deserialization process. This issue was addressed in version 1.4.1, which includes a fix to enhance efficiency and mitigate potential disruptions.

Affected Version(s)

seroval < 1.4.1

References

https://github.com/lxsmnsyc/seroval/security/advisories/G...
x_refsource_CONFIRM
https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.