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CVE-2020-7746

26
FAUCET Score

CVE-2020-7746 is a critical prototype pollution vulnerability affecting Chart.js versions prior to 2.9.4. It arises from improper sanitization of the options parameter during processing, allowing an attacker to inject arbitrary properties into an object's prototype. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, leading to potential complete compromise of confidentiality, integrity, and availability. While no active exploitation or public exploit code has been identified, and community discussion is minimal, the high severity warrants immediate patching.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.9.4CPE matchmatch criteria
cpe:2.3:a:chartjs:chart.js:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.74%
Probability of exploitation in next 30 days
EPSS Percentile
90.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0474 is in the 85th percentile among its peer group of 36,835 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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: chart.jsFixed in: 2.9.4
redhatpatch availablevia redhat_api
Product: RHPAM 7.13.1 asyncFixed in: chart.js
View patch

Vendor Advisories (2)

npmGHSA-h68q-55jf-x68whigh

Prototype pollution in chart.js

May 10, 2021
redhatCVE-2020-7746Important

chart.js: prototype pollution

Oct 19, 2020

References

github.com / chartjs/Chart.js/pull/7920
PatchThird Party Advisory
snyk.io / vuln/SNYK-JAVA-ORGWEBJARSBOWER-1019375
ExploitThird Party Advisory
snyk.io / vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBCHARTJS-1019376
ExploitThird Party Advisory
snyk.io / vuln/SNYK-JAVA-ORGWEBJARSNPM-1019374
ExploitThird Party Advisory
snyk.io / vuln/SNYK-JS-CHARTJS-1018716
ExploitThird Party Advisory