How severe is GHSA-cf4q-4cqr-7g7w?

No CVSS score has been assigned to GHSA-cf4q-4cqr-7g7w yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-cf4q-4cqr-7g7w?

GHSA-cf4q-4cqr-7g7w affects the following packages: xml2rfc (PyPI). Ecosystems affected: PyPI.

How do I fix GHSA-cf4q-4cqr-7g7w?

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.

How do I detect GHSA-cf4q-4cqr-7g7w in my PyPI dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for xml2rfc, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-cf4q-4cqr-7g7w if there is no patch (or I can't update yet)?

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.

Is GHSA-cf4q-4cqr-7g7w actively exploited in the wild?

No public exploit code has been indexed for GHSA-cf4q-4cqr-7g7w yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-cf4q-4cqr-7g7w published, and has it been updated?

GHSA-cf4q-4cqr-7g7w was published on April 22, 2022 and was last updated on December 5, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐍 PyPI

Not in CISA KEV

SVG with embedded scripts can lead to cross-site scripting attacks in xml2rfcGHSA-cf4q-4cqr-7g7w

GHSA-cf4q-4cqr-7g7w is a security vulnerability in xml2rfc. A fix is available for xml2rfc — see the affected versions and patch details below.

Published

Apr 22, 2022

Updated

Dec 5, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Dec 5, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

🐍xml2rfc

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

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

https://developer.mozilla.org/en-US/docs/Web/SVG/Element/script

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

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`xml2rfc`	all versions	3.12.4`pip install --upgrade 'xml2rfc==3.12.4'`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for xml2rfc, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
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
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

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](https://github.com/ietf-tools/xml2rfc/releases/tag/v3.12.4). ### Workarounds If SVG source is self-contained within the XML, scrapi

O3 Security · Impact-Aware SCA

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SVG with embedded scripts can lead to cross-site scripting attacks in xml2rfcGHSA-cf4q-4cqr-7g7w

Real-World Exposure

Description

Impact

Patches

Workarounds

References

For more information

Affected Packages

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is GHSA-cf4q-4cqr-7g7w in your dependencies?