pdoc embeds link to malicious CDN if math mode is enabled
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.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | pdoc | < 14.5.1 | 14.5.1 |
References
- https://github.com/mitmproxy/pdoc/security/advisories/GHSA-5vgj-ggm4-fg62
- https://nvd.nist.gov/vuln/detail/CVE-2024-38526
- https://github.com/mitmproxy/pdoc/pull/703
- https://github.com/mitmproxy/pdoc/commit/726b8f2e365fe8afeb3604a7c73d19b460395d58
- https://github.com/mitmproxy/pdoc
- https://sansec.io/research/polyfill-supply-chain-attack
- https://www.vicarius.io/vsociety/posts/polyfillio-in-pdoc-cve-2024-38526
- https://pypi.org/project/pdoc
- https://github.com/advisories/GHSA-5vgj-ggm4-fg62
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L- Weakness (CWE)
-- Platform
- Python (PyPI)
- Package
pdoc- Disclosed
- 25.06.2024
- Updated
- 11.10.2026 13:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-1764 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-5vgj-ggm4-fg62 - CC BY 4.0
Vulnerability history: pdoc
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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