{"id":"CVE-2026-41507","aliases":["GHSA-p6x5-p4xf-cc4r"],"url":"https://o3.security/vulnerability/CVE-2026-41507","summary":"Remote Code Execution (RCE) via String Literal Injection into math-codegen","details":"### Impact\n\nString 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.\n    \n### Patches\n\nThe vulnerability is addressed by using `JSON.stringify()` on string literal values in `lib/node/ConstantNode.js` to ensure they are treated as data rather than code. Users should upgrade to version 0.4.3 or later.\n    \n### Workarounds\n\nAvoid passing un-sanitized user input to the parser or manually escape string literals in the input.","published":"2026-05-08T13:49:34.091Z","modified":"2026-08-12T03:51:14.072173034Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.00393,"percentile":0.32064,"asOf":"2026-08-10"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"math-codegen","fixedVersion":"0.4.3"}],"fix":{"url":"https://github.com/mauriciopoppe/math-codegen/commit/4bb52d3030683362b3559ee8dd91350555a05f6b","label":"mauriciopoppe/math-codegen@4bb52d3"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41507.json"},{"type":"ADVISORY","url":"https://github.com/mauriciopoppe/math-codegen/security/advisories/GHSA-p6x5-p4xf-cc4r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41507"},{"type":"FIX","url":"https://github.com/mauriciopoppe/math-codegen/commit/4bb52d3030683362b3559ee8dd91350555a05f6b"},{"type":"FIX","url":"https://github.com/mauriciopoppe/math-codegen/pull/11"},{"type":"WEB","url":"https://github.com/hits3134"},{"type":"PACKAGE","url":"https://github.com/mauriciopoppe/math-codegen"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:14.072173034Z"}}