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 :
Jan. 8, 2026, 6:28 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update expr-eval to expr-eval-fork.
- Remove expr-eval package.
Public PoC/Exploit Available at Github
CVE-2025-13204 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-13204.
| URL | Resource |
|---|---|
| https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.py | Product |
| https://github.com/jorenbroekema/expr-eval | Product |
| https://github.com/silentmatt/expr-eval | Product |
| https://github.com/silentmatt/expr-eval/pull/252/files | Patch Issue Tracking |
| https://github.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.py | Product |
| https://www.huntr.dev/bounties/1-npm-expr-eval/ | Exploit Third Party Advisory |
| https://www.npmjs.com/package/expr-eval-fork | Product |
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)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-13204
weaknesses.
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).
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Python
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.
-
Initial Analysis by [email protected]
Jan. 08, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:silentmatt:javascript_expression_evaluator:*:*:*:*:*:node.js:*:* Added Reference Type CERT/CC: https://github.com/jorenbroekema/expr-eval Types: Product Added Reference Type CERT/CC: https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.py Types: Product Added Reference Type CERT/CC: https://github.com/silentmatt/expr-eval Types: Product Added Reference Type CERT/CC: https://github.com/silentmatt/expr-eval/pull/252/files Types: Issue Tracking, Patch Added Reference Type CERT/CC: https://github.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.py Types: Product Added Reference Type CERT/CC: https://www.huntr.dev/bounties/1-npm-expr-eval/ Types: Exploit, Third Party Advisory Added Reference Type CERT/CC: https://www.npmjs.com/package/expr-eval-fork Types: Product -
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