CVE-2026-23957

Published: Jan 22, 2026

Modified: Jan 22, 2026

PUBLISHED

CVSS v3.1

7.5

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.

Vendor	Product	Versions
lxsmnsyc	seroval	affected `< 1.4.1`

Weaknesses (CWE)

CWE-770

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-66fc-rw6m-c2q6

x_refsource_CONFIRM

https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060

x_refsource_MISC

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CVE-2026-23957

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References