CVE-2023-3973 — Cross-site Scripting (XSS) - Reflected in GitHub repository jgraph/drawio prior

Cross-site Scripting (XSS) - Reflected in GitHub repository jgraph/drawio prior to 21.6.3.

01What is this vulnerability?

Cross-site Scripting (XSS) - Reflected in GitHub repository jgraph/drawio prior to 21.6.3.

02Affected products

Vendor	Product	Versions
jgraph	jgraph/drawio	unspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-07-27T14:33:11.271Z
• Last modified: 2024-10-15T15:36:46.194Z

09References

• huntr.dev — https://huntr.dev/bounties/4c1c5db5-210f-4d7e-8380-b95f88fdb78d
• github.com — https://github.com/jgraph/drawio/commit/1db2c2c653aa245d175d30c210239e3946bfcb95