CVE-2026-41507 json
Remote Code Execution (RCE) via String Literal Injection into math-codegen
published 2026-04-17 6 mo ago modified 2026-10-26 13 d ago also GHSA-p6x5-p4xf-cc4r , EUVD-2026-28597
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm math-codegen 0.4.3
- mauriciopoppe math-codegen 0.4.3
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 6 mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | math-codegen | <0.4.3 |
0.4.3 |
Affected products
- mauriciopoppe math-codegen
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
github.com
/mauriciopoppe/math-codegen/pull/11
web, issue-tracking
-
github.com
/mauriciopoppe/math-codegen/commit/4bb52d3030683362b3559ee8dd91350555a05f6b
web, patch
-
github.com
/mauriciopoppe/math-codegen/security/advisories/GHSA-p6x5-p4xf-cc4r
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-41507
advisory
-
github.com
/hits3134
web
-
github.com
/mauriciopoppe/math-codegen
package
Sources
- CVE List CVE-2026-41507
- GitHub Advisory GHSA-p6x5-p4xf-cc4r
- NVD CVE-2026-41507
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