GHSA-cf4q-4cqr-7g7w
SVG with embedded scripts can lead to cross-site scripting attacks in xml2rfc
Blast Radius
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Description
xml2rfc allows script elements in SVG sources.
In HTML output having these script elements can lead to XSS attacks.
Sample XML snippet:
<artwork type="svg" src="data:image/svg+xml,%3Csvg viewBox='0 0 10 10' xmlns='http://www.w3.org/2000/svg'%3E%3Cscript%3E window.alert('Test Alert'); %3C/script%3E%3C/svg%3E">
</artwork>
Impact
This vulnerability impacts website that publish HTML drafts and RFCs.
Patches
This has been fixed in version 3.12.4.
Workarounds
If SVG source is self-contained within the XML, scraping script elements from SVG files.
References
For more information
If you have any questions or comments about this advisory:
- Open an issue in xml2rfc
- Email us at [email protected]
- Infrastructure and Services Vulnerability Disclosure
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | xml2rfc | all versions | 3.12.4 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for xml2rfc. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update xml2rfc to 3.12.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-cf4q-4cqr-7g7w is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-cf4q-4cqr-7g7w is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-cf4q-4cqr-7g7w. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-cf4q-4cqr-7g7w in your dependencies?
O3 detects GHSA-cf4q-4cqr-7g7w across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.