by Kastro
Paper/Archive/CVE-2026-41507

CVE-2026-41507

mauriciopoppe math-codegen — Remote Code Execution (RCE) via String Literal Injection into math-codegen

EPSS 0.4%CVSS 9.8
critical.is priorityof 100
36
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 33.5.335 × 206.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
math-codegen< 0.4.3–CNA

Scores by source

GitHub_M (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/mauriciopoppe/math-codegen/security/advisories/GHSA-p6x5-p4xf-cc4rrefgithub.com/mauriciopoppe/math-codegen/pull/11refgithub.com/mauriciopoppe/math-codegen/commit/4bb52d3030683362b3559ee8dd91350555a05f6b