CVE-2025-13204

7.3 HIGH
Published: November 14, 2025 Modified: November 18, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.py
Source: cret@cert.org
https://github.com/jorenbroekema/expr-eval
Source: cret@cert.org
https://github.com/silentmatt/expr-eval
Source: cret@cert.org
https://github.com/silentmatt/expr-eval/pull/252/files
Source: cret@cert.org
https://github.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.py
Source: cret@cert.org
https://www.huntr.dev/bounties/1-npm-expr-eval/
Source: cret@cert.org
https://www.npmjs.com/package/expr-eval-fork
Source: cret@cert.org

7 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.3 / 10.0
EPSS (Exploit Probability)
0.1%
23th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-1321

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