# Polyfill security incidents · pwn.watch

> Security incidents tagged Polyfill (vendor, product, platform or attack type).

Page: https://pwn.watch/t/polyfill · generated 2026-10-22T19:58:23.236Z

## Status (as of 2026-10-22)
- Incidents: 1 (0 live, 0 live and not fully patched, 1 patched)
- Days without a Polyfill security incident: 847
- Newest incident started: 2024-06-25

## Feeds
- JSON (incidents + changes + posts): https://pwn.watch/t/polyfill.json
- RSS (one item per incident, bumped on each update): https://pwn.watch/t/polyfill/feed.xml
- This file: https://pwn.watch/t/polyfill/llms.txt
- Whole site: https://pwn.watch/llms.txt · all tags: https://pwn.watch/tags.json

## Incidents (newest first by start date)
- [polyfill.io CDN turned malicious on 100k+ sites](https://pwn.watch/i/polyfill-io-supply-chain-attack) ([json](https://pwn.watch/i/polyfill-io-supply-chain-attack.json)): high, closed, patched, started 2024-06-25