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PYSEC-2026-2058

xml2rfc has an arbitrary file read vulnerability

Details

### Impact When generating PDF files, this vulnerability allows an attacker to read arbitrary files from the filesystem by injecting malicious link element into the XML.

### Workarounds Test untrusted input with `link` elements with `rel="attachment"` before processing.

### Credits This vulnerability was reported by Mohamed Ouad from [Doyensec](https://doyensec.com/).

Are you affected?

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Affected packages

PyPI / xml2rfc

Introduced in: 0 Fixed in: 3.30.1

Fix pip install --upgrade 'xml2rfc>=3.30.1'

References

https://github.com/ietf-tools/xml2rfc/security/advisories/GHSA-cfmv-h8fx-85m7 [WEB]
https://github.com/ietf-tools/xml2rfc/commit/f2b245bc0aeeac0667c8f74e976c466c5991f0e4 [WEB]
https://github.com/ietf-tools/xml2rfc [PACKAGE]
https://pypi.org/project/xml2rfc [PACKAGE]
https://github.com/advisories/GHSA-cfmv-h8fx-85m7 [ADVISORY]
https://nvd.nist.gov/vuln/detail/CVE-2025-11058 [ADVISORY]