What is the CVSS score of CVE-2025-13204?

CVE-2025-13204 has a CVSS 3.1 base score of 7.3 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L. EPSS exploitation probability: 0.0%.

Which versions of Node.js are affected by CVE-2025-13204?

CVE-2025-13204 presents moderate security risk, a prototype pollution vulnerability rated CVSS 7.3. Exploitation could compromise the security of affected deployments.. A patch is available.

Is there a public PoC exploit available for CVE-2025-13204?

Yes, a public proof-of-concept exploit is available for CVE-2025-13204. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-13204?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Node.js CVE-2025-13204

HIGH

Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution) (CWE-1321)

2025-11-14 cret@cert.org

Node.js Prototype Pollution RCE Javascript Expression Evaluator Red Hat

7.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.3 HIGH

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

Red Hat

7.3 HIGH

qualitative

Primary rating from NVD.

CVSS VectorNVD

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

Analysis Generated

Mar 28, 2026 - 19:22 vuln.today

Patch released

Mar 28, 2026 - 19:22 nvd

Patch available

PoC Detected

Jan 08, 2026 - 18:28 vuln.today

Public exploit code

CVE Published

Nov 14, 2025 - 17:16 nvd

HIGH 7.3

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

1,930 npm packages depend on expr-eval (263 direct, 1,670 indirect)
55 npm packages depend on expr-eval-fork (1 direct, 54 indirect)

Ecosystem-wide dependent count for version 2.0.2 and other introduced versions.

DescriptionCVE.org

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.

AnalysisAI

npm package expr-eval is vulnerable to Prototype Pollution. Rated high severity (CVSS 7.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution) (CWE-1321), which allows attackers to modify object prototypes to inject properties affecting application logic. 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. Affected products include: Silentmatt Javascript Expression Evaluator.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Freeze prototypes, validate object keys, avoid recursive merging of untrusted data.