Back
CVE-2020-7743Prototype Pollution
- 7.3HighCVSS base score
- 3.9%Exploitation in 30 daysEPSS · top 9.5% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The package mathjs before 7.5.1 are vulnerable to Prototype Pollution via the deepExtend function that runs upon configuration updates.
Timeline
ID reserved
By snyk
- 9 months later
· 9 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| snykCNA (assigner) | 3.1 | High7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| NVDNVD · Modified | 3.1 | High7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
- EPSS (exploitation in 30 days)
- 3.9% · top 9.5% of all CVEs (14 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.
Affected products
mathjs
- affected unspecified – < 7.5.1
Affected packages
From reviewed advisories of the GitHub Advisory Database.
References
References6
- https://snyk.io/vuln/SNYK-JS-MATHJS-1016401 (opens in a new tab)x_refsource_MISCx_transferred
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1017111 (opens in a new tab)x_refsource_MISCx_transferred
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1017112 (opens in a new tab)x_refsource_MISCx_transferred
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1017113 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/josdejong/mathjs/blob/develop/src/utils/object.js%23L82 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/josdejong/mathjs/commit/ecb80514e80bce4e6ec7e71db8ff79954f07c57e (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-1224 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-x2fc-mxcx-w4mf (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-7743)Record last updated .