PYSEC-2026-1764
pdoc embeds link to malicious CDN if math mode is enabled
Quick fix
PYSEC-2026-1764 — pdoc: upgrade to the fixed version with the command below.
pip install --upgrade 'pdoc>=14.5.1'Details
### Impact
Documentation generated with `pdoc --math` linked to JavaScript files from polyfill.io. The polyfill.io CDN has been sold and now serves malicious code.
Users who produce documentation with math mode should update immediately. All other users are unaffected.
### Patches
This issue has been fixed in pdoc 14.5.1.
### References
https://github.com/mitmproxy/pdoc/pull/703 https://sansec.io/research/polyfill-supply-chain-attack
### Timeline
- **[2024-06-25]** https://sansec.io/research/polyfill-supply-chain-attack is published. - **[2024-06-25 20:54 UTC]** Issue reported to the pdoc project by @adhintz. - **[2024-06-25 21:33 UTC]** Patched version released. - **[2024-06-25 21:37 UTC]** Security advisory published. - **[2024-06-25 23:49 UTC]** CVE-2024-38526 assigned by GitHub.
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://github.com/mitmproxy/pdoc/security/advisories/GHSA-5vgj-ggm4-fg62[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2024-38526[ADVISORY]
- https://github.com/mitmproxy/pdoc/pull/703[WEB]
- https://github.com/mitmproxy/pdoc/commit/726b8f2e365fe8afeb3604a7c73d19b460395d58[WEB]
- https://github.com/mitmproxy/pdoc[PACKAGE]
- https://sansec.io/research/polyfill-supply-chain-attack[WEB]
- https://www.vicarius.io/vsociety/posts/polyfillio-in-pdoc-cve-2024-38526[WEB]
- https://pypi.org/project/pdoc[PACKAGE]
- https://github.com/advisories/GHSA-5vgj-ggm4-fg62[ADVISORY]