silentmatt expr-eval up to 2.0.2 prototype pollution

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in silentmatt expr-eval up to 2.0.2. It has been declared as critical. This impacts an unknown function. Executing a manipulation can lead to prototype pollution. This vulnerability is handled as CVE-2025-13204. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical was found in silentmatt expr-eval up to 2.0.2. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a prototype pollution vulnerability. The CWE definition for the vulnerability is CWE-1321. The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at npmjs.com. This vulnerability was named CVE-2025-13204 since 11/14/2025. The exploitation appears to be easy. The attack can be initiated remotely. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 281897 (RHEL 8 : grafana-pcp (RHSA-2026:0140)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (281897), EUVD (EUVD-2025-197614) and CERT Bund (WID-SEC-2026-0021). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Red Hat Enterprise Linux

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Prototype pollution
CWE: CWE-1321 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 281897
Nessus Name: RHEL 8 : grafana-pcp (RHSA-2026:0140)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/14/2025 Advisory disclosed
11/14/2025 +0 days CVE reserved
11/14/2025 +0 days VulDB entry created
01/07/2026 +54 days VulDB entry last update

Sourcesinfo

Advisory: npmjs.com
Status: Not defined

CVE: CVE-2025-13204 (🔒)
GCVE (CVE): GCVE-0-2025-13204
GCVE (VulDB): GCVE-100-332506
EUVD: 🔒
CERT Bund: WID-SEC-2026-0021 - Red Hat Enterprise Linux (npm expr-eval): Schwachstelle ermöglicht Codeausführung

Entryinfo

Created: 11/14/2025 19:54
Updated: 01/07/2026 10:56
Changes: 11/14/2025 19:54 (51), 11/14/2025 23:02 (1), 01/07/2026 09:59 (2), 01/07/2026 10:56 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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