What’s Vulnerable › Vulnerabilities

CVE-2024-38526: pdoc embeds link to malicious CDN if math mode is enabled

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-06-26 · updated 2026-06-17
• Weakness: CWE-1395

Description

pdoc provides API Documentation for Python Projects. Documentation generated with `pdoc --math` linked to JavaScript files from polyfill.io. The polyfill.io CDN has been sold and now serves malicious code. This issue has been fixed in pdoc 14.5.1.

Affected products

• mitmproxy pdoc: before 14.5.1 — fixed in 14.5.1

How to fix

Upgrade to a fixed version: mitmproxy pdoc 14.5.1. Check the vendor advisory for mitigations.

References

• https://github.com/mitmproxy/pdoc/pull/703
• https://github.com/mitmproxy/pdoc/security/advisories/GHSA-5vgj-ggm4-fg62
• https://sansec.io/research/polyfill-supply-chain-attack
• https://www.vicarius.io/vsociety/posts/polyfillio-in-pdoc-cve-2024-38526
• https://github.com/mitmproxy/pdoc/pull/703
• https://github.com/mitmproxy/pdoc/security/advisories/GHSA-5vgj-ggm4-fg62
• https://sansec.io/research/polyfill-supply-chain-attack
• https://www.vicarius.io/vsociety/posts/polyfillio-in-pdoc-cve-2024-38526

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