HOMEVULNERABILITIESCVE-2020-7746
CRITICAL

CVE-2020-7746

CWE-1321Published: October 29, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

This affects the package chart.js before 2.9.4. The options parameter is not properly sanitized when it is processed. When the options are processed, the existing options (or the defaults options) are deeply merged with provided options. However, during this operation, the keys of the object being set are not checked, leading to a prototype pollution.

NVD Source

Technical Analysis

CVE-2020-7746 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

chartjs1 product(s)
chart.js
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/chartjs/Chart.js/pull/7920
PATCHhttps://github.com/chartjs/Chart.js/pull/7920
ADVISORYhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1019375
ADVISORYhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBCHARTJS-1019376
ADVISORYhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1019374
ADVISORYhttps://snyk.io/vuln/SNYK-JS-CHARTJS-1018716
ADVISORYhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1019375
ADVISORYhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBCHARTJS-1019376
ADVISORYhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1019374
ADVISORYhttps://snyk.io/vuln/SNYK-JS-CHARTJS-1018716

All References (10)

→
https://github.com/chartjs/Chart.js/pull/7920Patch · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1019375Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBCHARTJS-1019376Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1019374Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JS-CHARTJS-1018716Exploit · Third Party Advisory
→
https://github.com/chartjs/Chart.js/pull/7920Patch · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1019375Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBCHARTJS-1019376Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1019374Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JS-CHARTJS-1018716Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2020-7746
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-1321
CISA KEVNo
Affected1 vendor(s)
PublishedOct 29, 2020

Related CVEs (CWE-1321)

CVE-2020-12079
10.0
CVE-2024-39008
10.0
CVE-2021-23594
10.0
CVE-2023-26121
10.0
CVE-2026-25881
10.0
CVE-2021-23449
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-7746 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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