CVE-2026-40897 (GCVE-0-2026-40897)

Vulnerability from cvelistv5 – Published: 2026-04-24 16:48 – Updated: 2026-07-15 01:00
VLAI
Title
Math.js: Unsafe object property setter in mathjs
Summary
Math.js is an extensive math library for JavaScript and Node.js. From 13.1.1 to before 15.2.0, a vulnerability allowed executing arbitrary JavaScript via the expression parser of mathjs. You can be affected when you have an application where users can evaluate arbitrary expressions using the mathjs expression parser. This vulnerability is fixed in 15.2.0.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-24 17:44 UTC
CWE
  • CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes
  • CWE-917 - Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
Show details on NVD website

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              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-915",
                  "description": "CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-04-24T16:48:34.849Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/josdejong/mathjs/security/advisories/GHSA-29qv-4j9f-fjw5",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/josdejong/mathjs/security/advisories/GHSA-29qv-4j9f-fjw5"
            },
            {
              "name": "https://github.com/josdejong/mathjs/pull/3656",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/josdejong/mathjs/pull/3656"
            },
            {
              "name": "https://github.com/josdejong/mathjs/commit/513ab2a0e01004af91b31aada68fae8a821326ad",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/josdejong/mathjs/commit/513ab2a0e01004af91b31aada68fae8a821326ad"
            }
          ],
          "source": {
            "advisory": "GHSA-29qv-4j9f-fjw5",
            "discovery": "UNKNOWN"
          },
          "title": "Math.js: Unsafe object property setter in mathjs"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-40897",
        "datePublished": "2026-04-24T16:48:34.849Z",
        "dateReserved": "2026-04-15T16:37:22.766Z",
        "dateUpdated": "2026-04-24T17:44:59.520Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

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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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