What’s Vulnerable › Vulnerabilities

CVE-2026-41507: Remote Code Execution (RCE) via String Literal Injection into math-codegen

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-08 · updated 2026-10-26
• Weakness: CWE-94

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.

Affected products

• mauriciopoppe math-codegen: before 0.4.3 — fixed in 0.4.3

How to fix

Upgrade to a fixed version: mauriciopoppe math-codegen 0.4.3. Check the vendor advisory for mitigations.

References

• https://github.com/mauriciopoppe/math-codegen/commit/4bb52d3030683362b3559ee8dd91350555a05f6b
• https://github.com/mauriciopoppe/math-codegen/pull/11
• https://github.com/mauriciopoppe/math-codegen/security/advisories/GHSA-p6x5-p4xf-cc4r

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