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CVE-2020-7743

20
FAUCET Score

CVE-2020-7743 describes a Prototype Pollution vulnerability in the mathjs package, specifically affecting versions prior to 7.5.1, through its deepExtend function during configuration updates. This vulnerability carries a CVSS score of 7.3 (HIGH), indicating a network-exploitable flaw with low attack complexity, requiring no user interaction or privileges, and potentially leading to low impacts on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 7.5.1CPE matchmatch criteria
cpe:2.3:a:mathjs:mathjs:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.3HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.92%
Probability of exploitation in next 30 days
EPSS Percentile
89.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0392 is in the 81st percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: mathjsFixed in: 7.5.1
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Tower 3.7 for RHEL 7Fixed in: ansible-tower-37/ansible-tower-rhel7:3.7.4-1
View patch

Vendor Advisories (2)

npmGHSA-x2fc-mxcx-w4mfhigh

Prototype Pollution in mathjs

May 10, 2021
redhatCVE-2020-7743Moderate

mathjs: prototype pollution via the deepExtend function that runs upon configuration updates

Oct 7, 2020

References

github.com / josdejong/mathjs/blob/develop/src/utils/object.js%23L82
Broken LinkThird Party Advisory
github.com / josdejong/mathjs/commit/ecb80514e80bce4e6ec7e71db8ff79954f07c57e
PatchThird Party Advisory
snyk.io / vuln/SNYK-JAVA-ORGWEBJARS-1017113
ExploitMitigationThird Party Advisory
snyk.io / vuln/SNYK-JAVA-ORGWEBJARSBOWER-1017112
ExploitMitigationThird Party Advisory
snyk.io / vuln/SNYK-JAVA-ORGWEBJARSNPM-1017111
ExploitMitigationThird Party Advisory
snyk.io / vuln/SNYK-JS-MATHJS-1016401
ExploitMitigationThird Party Advisory