Description
### Impact
When generating PDF files, this vulnerability allows an attacker to read arbitrary files from the filesystem by injecting malicious link element into the prepped RFCXML.
### Workarounds
Test untrusted input with `link` elements with `rel="attachment"` before processing.
### References
This is related to [GHSA-cfmv-h8fx-85m7](https://github.com/ietf-tools/xml2rfc/security/advisories/GHSA-cfmv-h8fx-85m7).
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | xml2rfc | < 3.30.2 | 3.30.2 | GHSA-9mv7-3c64-mmqw |