7.3
HIGH CVSS 3.1
CVE-2025-13204
CVE-2025-13204
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.

INFO

Published Date :

Nov. 14, 2025, 5:16 p.m.

Last Modified :

Nov. 14, 2025, 9:15 p.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2025-13204 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
Update the vulnerable dependency to the resolved package version.
  • Update expr-eval to expr-eval-fork.
  • Remove expr-eval package.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-13204 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-13204 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-13204 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    Nov. 14, 2025

    Action Type Old Value New Value
    Added Reference https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.py
    Added Reference https://github.com/silentmatt/expr-eval/pull/252/files
    Added Reference https://github.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.py
    Added Reference https://www.huntr.dev/bounties/1-npm-expr-eval/
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Nov. 14, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
    Added CWE CWE-1321
  • New CVE Received by [email protected]

    Nov. 14, 2025

    Action Type Old Value New Value
    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.
    Added Reference https://github.com/jorenbroekema/expr-eval
    Added Reference https://github.com/silentmatt/expr-eval
    Added Reference https://www.npmjs.com/package/expr-eval-fork
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact