CVE-2026-41507: CWE-94: Improper Control of Generation of Code ('Code Injection') in mauriciopoppe math-codegen
math-codegen generates code from mathematical expressions. Prior to version 0.4.3, string literal content passed to cg.parse() is injected verbatim into a new Function() body without sanitization. This allows an attacker to execute arbitrary system commands when user-controlled input reaches the parser. Any application exposing a math evaluation endpoint where user input flows into cg.parse() is vulnerable to full RCE. This issue has been patched in version 0.4.3.
AI Analysis
Technical Summary
The mauriciopoppe math-codegen library generates code from mathematical expressions. Before version 0.4.3, it improperly handled string literals passed to the cg.parse() function by injecting them verbatim into a new Function() body without sanitization. This improper control of code generation (CWE-94) enables attackers to execute arbitrary system commands when user input is passed to the parser, leading to full remote code execution. The vulnerability has a CVSS 3.1 base score of 9.8, indicating critical severity. The issue is fixed in version 0.4.3.
Potential Impact
Exploitation of this vulnerability allows an unauthenticated attacker to achieve full remote code execution on any application that exposes a math evaluation endpoint where user input is passed to cg.parse(). This can lead to complete system compromise, data loss, or further attacks. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade to mauriciopoppe math-codegen version 0.4.3 or later, where this vulnerability has been patched. Applications using affected versions should immediately update to the fixed version to prevent exploitation. Patch status is not explicitly stated in a vendor advisory, but the description confirms the issue is fixed in version 0.4.3.
CVE-2026-41507: CWE-94: Improper Control of Generation of Code ('Code Injection') in mauriciopoppe math-codegen
Description
math-codegen generates code from mathematical expressions. Prior to version 0.4.3, string literal content passed to cg.parse() is injected verbatim into a new Function() body without sanitization. This allows an attacker to execute arbitrary system commands when user-controlled input reaches the parser. Any application exposing a math evaluation endpoint where user input flows into cg.parse() is vulnerable to full RCE. This issue has been patched in version 0.4.3.
CVSS v3.1
Score 9.8critical
Affected software
pkg:npm/mauriciopoppe/math-codegenRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The mauriciopoppe math-codegen library generates code from mathematical expressions. Before version 0.4.3, it improperly handled string literals passed to the cg.parse() function by injecting them verbatim into a new Function() body without sanitization. This improper control of code generation (CWE-94) enables attackers to execute arbitrary system commands when user input is passed to the parser, leading to full remote code execution. The vulnerability has a CVSS 3.1 base score of 9.8, indicating critical severity. The issue is fixed in version 0.4.3.
Potential Impact
Exploitation of this vulnerability allows an unauthenticated attacker to achieve full remote code execution on any application that exposes a math evaluation endpoint where user input is passed to cg.parse(). This can lead to complete system compromise, data loss, or further attacks. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade to mauriciopoppe math-codegen version 0.4.3 or later, where this vulnerability has been patched. Applications using affected versions should immediately update to the fixed version to prevent exploitation. Patch status is not explicitly stated in a vendor advisory, but the description confirms the issue is fixed in version 0.4.3.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-20T18:18:50.681Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fdede4cbff5d8610dd27ad
Added to database: 05/08/2026, 14:06:28 UTC
Last enriched: 05/08/2026, 14:22:28 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 105
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