CVE-2026-23957

HIGH
2026-01-22 [email protected] GHSA-66fc-rw6m-c2q6
7.5
CVSS 3.1
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CVSS 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

Lifecycle Timeline

3
Patch Released
Apr 06, 2026 - 13:51 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 22, 2026 - 02:15 nvd
HIGH 7.5

Tags

Deserialization Denial Of Service Redhat Suse

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.

Analysis

Seroval versions 1.4.0 and below are vulnerable to denial of service through malformed deserialization payloads that specify excessively large array lengths, causing the parsing process to consume excessive CPU resources and become unresponsive. An unauthenticated remote attacker can exploit this without user interaction by sending a crafted serialized object to any application using the vulnerable library. …

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Remediation

Within 7 days: Identify all affected systems and apply vendor patches promptly. Vendor patch is available.

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Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +38
POC: 0

Vendor Status

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CVE-2026-23957 vulnerability details – vuln.today
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