Skip to main content

Seroval CVE-2026-23736

HIGH
Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution) (CWE-1321)
2026-01-21 security-advisories@github.com GHSA-hj76-42vx-jwp4
Deserialization Seroval Red Hat Suse
7.3
CVSS 3.1 · GitHub Advisory
Share

Severity by source

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

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
Patch released
Feb 27, 2026 - 19:36 nvd
Patch available
CVE Published
Jan 21, 2026 - 23:15 nvd
HIGH 7.3

DescriptionGitHub Advisory

seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, due to improper input validation, a malicious object key can lead to prototype pollution during JSON deserialization. This vulnerability affects only JSON deserialization functionality. This issue is fixed in version 1.4.1.

AnalysisAI

Seroval is affected by improperly controlled modification of object prototype attributes (prototype pollution) (CVSS 7.3).

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
Craft malicious object with polluted prototype keys
Exploit
Send JSON payload to deserialization endpoint
Execution
Poison Object.prototype during deserialization
Impact
Inject arbitrary properties into application objects
Sign in to reveal

Vulnerability AssessmentAI

Exploitation seroval library versions 1.4.0 and below with JSON deserialization functionality enabled. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 7.3 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker could exploit this vulnerability to prototype pollution during JSON deserialization.
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-2026-23736 vulnerability details – vuln.today
Back

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