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CVE-2021-23444

29
FAUCET Score

CVE-2021-23444 is a critical type confusion vulnerability in the jointjs package prior to version 3.4.2. This flaw allows an attacker to bypass a previous security fix (CVE-2020-28480) by manipulating array-based keys in the setByPath function. With a CVSS score of 9.8, it presents a severe risk, as it can be exploited remotely with low complexity and no user interaction, potentially leading to complete compromise of confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, nor are there public exploit modules or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.4.2CPE matchmatch criteria
cpe:2.3:a:client:jointjs:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.6MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.86%
Probability of exploitation in next 30 days
EPSS Percentile
77.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0186 is in the 65th percentile among its peer group of 36,897 CVEs.

Social Chatter

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 (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: jointjsFixed in: 3.4.2

Vendor Advisories (1)

npmGHSA-f3pp-32qc-36w4medium

Prototype Pollution in jointjs

Sep 22, 2021

References

github.com / clientIO/joint/commit/e5bf89efef6d5ea572d66870ffd86560de7830a8
PatchThird Party Advisory
github.com / clientIO/joint/pull/1514
Third Party Advisory
github.com / clientIO/joint/releases/tag/v3.4.2
Release NotesThird Party Advisory
snyk.io / vuln/SNYK-JAVA-ORGWEBJARSBOWER-1655817
ExploitThird Party Advisory
snyk.io / vuln/SNYK-JAVA-ORGWEBJARSNPM-1655816
ExploitThird Party Advisory
snyk.io / vuln/SNYK-JS-JOINTJS-1579578
ExploitThird Party Advisory