CVE-2021-23444: This affects the package jointjs before 3.4.2

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MEDIUM 5.6REMOTEUPGRADE

CVE-2021-23444 is a medium-severity flaw (CVSS 5.6) affecting jointjs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

This affects the package jointjs before 3.4.2. A type confusion vulnerability can lead to a bypass of CVE-2020-28480 when the user-provided keys used in the path parameter are arrays in the setByPath function.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.6 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Weakness	CWE-843
Published	2021-09-21
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: client

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-09-21 17:15 UTCPublished CVE record published
2026-06-17 03:38 UTCUpdated Record last modified

client jointjs UPGRADE

Affected: < 3.4.2

Fixed in: 3.4.2

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls jointjs

2. UPGRADE to 3.4.2

npm install jointjs@">=3.4.2"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-23444?

jointjs: upgrade to 3.4.2. Exact commands for each OS are on this page.

Is CVE-2021-23444 being exploited?

CVE-2021-23444 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-23444 affect?

CVE-2021-23444 affects jointjs. Severity is medium (CVSS 5.6). This affects the package jointjs before 3.4.2. A type confusion vulnerability can lead to a bypass of CVE-2020-28480 when the user-provided keys used in the path parameter are arrays in the setByPath function.

How urgent is CVE-2021-23444?

Priority 49/100. Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-28480 HIGH 7.3 UPGRADE The package jointjs before 3.3.0 are vulnerable to Prototype Pollution via util.setByPath (https://resources.j
CVE-2020-28479 MEDIUM 5.9 UPGRADE The package jointjs before 3.3.0 are vulnerable to Denial of Service (DoS) via the unsetByPath function.

References

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