Vulnerability-Lookup

GHSA-P6X5-P4XF-CC4R

Vulnerability from github – Published: 2026-04-17 22:31 – Updated: 2026-05-12 13:32

Summary

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

Details

Impact

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.

Patches

The 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.

Workarounds

Avoid passing un-sanitized user input to the parser or manually escape string literals in the input.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "math-codegen"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-41507"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-17T22:31:45Z",
    "nvd_published_at": "2026-05-08T14:16:34Z",
    "severity": "CRITICAL"
  },
  "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.",
  "id": "GHSA-p6x5-p4xf-cc4r",
  "modified": "2026-05-12T13:32:44Z",
  "published": "2026-04-17T22:31:45Z",
  "references": [
    {
      "type": "WEB",
      "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": "WEB",
      "url": "https://github.com/mauriciopoppe/math-codegen/pull/11"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mauriciopoppe/math-codegen/commit/4bb52d3030683362b3559ee8dd91350555a05f6b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hits3134"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mauriciopoppe/math-codegen"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Remote Code Execution (RCE) via String Literal Injection into math-codegen"
}

CVE-2026-41507 (GCVE-0-2026-41507)

Vulnerability from cvelistv5 – Published: 2026-05-08 13:49 – Updated: 2026-05-08 14:20

Title

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

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.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-08 14:20 UTC

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/mauriciopoppe/math-codegen/sec…	x_refsource_CONFIRM
https://github.com/mauriciopoppe/math-codegen/pull/11	x_refsource_MISC
https://github.com/mauriciopoppe/math-codegen/com…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
mauriciopoppe	math-codegen	Affected: < 0.4.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-41507",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-08T14:20:14.868190Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-08T14:20:21.285Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "math-codegen",
          "vendor": "mauriciopoppe",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.4.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-94",
              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-08T13:49:34.091Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/mauriciopoppe/math-codegen/security/advisories/GHSA-p6x5-p4xf-cc4r",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/mauriciopoppe/math-codegen/security/advisories/GHSA-p6x5-p4xf-cc4r"
        },
        {
          "name": "https://github.com/mauriciopoppe/math-codegen/pull/11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mauriciopoppe/math-codegen/pull/11"
        },
        {
          "name": "https://github.com/mauriciopoppe/math-codegen/commit/4bb52d3030683362b3559ee8dd91350555a05f6b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mauriciopoppe/math-codegen/commit/4bb52d3030683362b3559ee8dd91350555a05f6b"
        }
      ],
      "source": {
        "advisory": "GHSA-p6x5-p4xf-cc4r",
        "discovery": "UNKNOWN"
      },
      "title": "Remote Code Execution (RCE) via String Literal Injection into math-codegen"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-41507",
    "datePublished": "2026-05-08T13:49:34.091Z",
    "dateReserved": "2026-04-20T18:18:50.681Z",
    "dateUpdated": "2026-05-08T14:20:21.285Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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