CVE-2020-7743
CVE-2020-7743 is a high-severity vulnerability in Mathjs with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.
Key facts
- Severity: High (CVSS 3.x base score 7.3)
- CVSS v2: 7.5
- EPSS exploit prediction: 4% (89th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-1321
- Affected product: Mathjs
- Published:
- Last modified:
Description
The package mathjs before 7.5.1 are vulnerable to Prototype Pollution via the deepExtend function that runs upon configuration updates.
Frequently asked questions
- What is CVE-2020-7743?
- The package mathjs before 7.5.1 are vulnerable to Prototype Pollution via the deepExtend function that runs upon configuration updates.
- How severe is CVE-2020-7743?
- CVE-2020-7743 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2020-7743 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-7743?
- CVE-2020-7743 affects Mathjs. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-7743?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-7743 published?
- CVE-2020-7743 was published on 2020-10-13 and last updated on 2026-06-17.
References
- https://github.com/josdejong/mathjs/blob/develop/src/utils/object.js%23L82
- https://github.com/josdejong/mathjs/commit/ecb80514e80bce4e6ec7e71db8ff79954f07c57e
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1017113
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1017112
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1017111
- https://snyk.io/vuln/SNYK-JS-MATHJS-1016401
Affected products (1)
- cpe:2.3:a:mathjs:mathjs:*:*:*:*:*:node.js:*:*
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