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Not in CISA KEV
MEDIUM severity

CVE-2022-40440 — mxgraph

MEDIUM

CVE-2022-40440 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in mxgraph. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

mxGraph vulnerable to cross-site scripting in setTooltips function

Also known asGHSA-j4rv-pr9g-q8jv
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
1 known
Exploitation data as of Oct 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk+0.09%
Lower risk than most CVEs54th percentile — riskier than 54% of all scored CVEsHighest risk
0.00%0.41%0.82%1.23%0.5%0.7%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.

mxgraphnpm
22Kdownloads / week

Description

mxGraph v4.2.2 was discovered to contain a cross-site scripting (XSS) vulnerability via the setTooltips() function.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
📦npmmxgraphall versionsNo fix

Affected Products

1 product · 1 configurations
Application
mxgraphjgraph
1 version
4.2.2
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

mxGraph v4.2.2 was discovered to contain a cross-site scripting (XSS) vu…

github.comNVDOct 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mxgraph, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of mxgraph for CVE-2022-40440. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

mxGraph v4.2.2 was discovered to contain a cross-site scripting (XSS) vulnerability via the setTooltips() function.
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CVE-2022-40440: mxgraph XSS (Medium 6.1)