Skip to main content

Red Hat CVE-2026-23957

HIGH
Allocation of Resources Without Limits or Throttling (CWE-770)
2026-01-22 security-advisories@github.com GHSA-66fc-rw6m-c2q6
Deserialization Denial Of Service Red Hat Suse
7.5
CVSS 3.1 · GitHub Advisory
Share

Severity by source

GitHub Advisory PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SUSE
HIGH
qualitative
Red Hat
7.5 HIGH
qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

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

DescriptionGitHub Advisory

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.

AnalysisAI

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. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Send crafted serialized object
Exploit
Override encoded array length with large value
Execution
Trigger excessive deserialization processing
Impact
Cause denial of service
Sign in to reveal

Vulnerability AssessmentAI

Exploitation seroval library versions 1.4.0 and below processing untrusted serialized data with custom array length encoding. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 7.5 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker could exploit this vulnerability to compromise the affected system.
Remediation A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Recommended ActionAI

Within 7 days: Identify all affected systems and apply vendor patches promptly. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

Vendor StatusVendor

SUSE

Severity: High

Share

CVE-2026-23957 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy