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CVE-2025-13204

CVE-2025-13204

Published: Nov 14, 2025Updated: Jan 8, 2026 Sources: CVE List NVD GHSACWE-1321
NVD MITRE
7.3CVSSHIGH
EPSS Score
0.4%
Top 67.1%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-1321

Affected Products

javascript expression evaluatorsilentmatt
Library
OSS Libraries / generic-library
expr-evalsilentmatt
Library
OSS Libraries / generic-library
expr-evalnpmOSS Libraries
expr-eval-forknpmOSS Libraries
silentmattindividual-devOSS Librariesaka expr-eval, javascript expression evaluator
npmpackage-ecosystemOSS Libraries

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Execution
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References

https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.py
github.com
https://github.com/jorenbroekema/expr-eval
github.com
https://github.com/silentmatt/expr-eval
github.com
and 8 more references View all →

Timeline

Published
Nov 14, 2025
Last Updated
Jan 8, 2026

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