CVE-2025-13204

CVE-2025-13204

Published Nov 14, 2025 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. The npm expr-eval-fork package resolves this issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-8gw3-rxh4-v6jx expr-eval vulnerable to Prototype Pollution
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Silentmatt
Silentmatt javascript Expression Evaluator
CPEs cpe:2.3:a:silentmatt:javascript_expression_evaluator:*:*:*:*:*:node.js:*:*
Vendors & Products Silentmatt
Silentmatt javascript Expression Evaluator
Type Values Removed Values Added
First Time appeared Expr-eval Project
Expr-eval Project expr-eval
Vendors & Products Expr-eval Project
Expr-eval Project expr-eval
Type Values Removed Values Added
Weaknesses CWE-1321
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. The npm expr-eval-fork package resolves this issue.
Title CVE-2025-13204
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
certcc
Published
Updated
Oct 30, 2026, 6:06 PM
Reserved
Nov 14, 2025, 4:52 PM
Status
Modified
Published
Nov 14, 2025, 5:16 PM
Modified
Oct 30, 2026, 7:17 PM
Severity
Important
Public date
Nov 14, 2025, 5:02 PM