CVE-2026-41507 Remote Code Execution (RCE) via String Literal Injection into math-codegen
Attackers can execute arbitrary system commands by injecting code into math expressions processed by the math-codegen library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-41507?
CVE-2026-41507 is a critical code injection vulnerability in mauriciopoppe math-codegen, published on 8 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-94
Which versions are affected by CVE-2026-41507?
2 open source packages ship an affected version, including math-codegen. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
math-codegen npm | All versions | 0.4.3 |
math-codegen npm | All versions | 0.4.3 |
Products include Mauriciopoppe Math-Codegen.
How do I fix CVE-2026-41507?
Upgrade math-codegen to 0.4.3 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-41507 being exploited?
There is no known exploitation of CVE-2026-41507 in the wild and no public exploit code.
Sources
Also known as GHSA-p6x5-p4xf-cc4r.