# HTTP/3 security incidents · pwn.watch

> Security incidents tagged HTTP/3 (vendor, product, platform or attack type).

Page: https://pwn.watch/t/http3 · generated 2026-10-22T18:10:31.291Z

## Status (as of 2026-10-22)
- Incidents: 2 (1 live, 1 live and not fully patched, 1 patched)
- Days without a HTTP/3 security incident: 0 (1 still unpatched, so the counter stays at 0)
- Newest incident started: 2026-10-20

## Feeds
- JSON (incidents + changes + posts): https://pwn.watch/t/http3.json
- RSS (one item per incident, bumped on each update): https://pwn.watch/t/http3/feed.xml
- This file: https://pwn.watch/t/http3/llms.txt
- Whole site: https://pwn.watch/llms.txt · all tags: https://pwn.watch/tags.json

## Incidents (newest first by start date)
- [HTTP/3 QPACK “Header Accordions” memory-amplification DoS](https://pwn.watch/i/http3-qpack-header-accordions) ([json](https://pwn.watch/i/http3-qpack-header-accordions.json)): unknown, live, partial, started 2026-10-20, CVE-2025-64702, CVE-2026-12523, CVE-2025-13945
- [nginx 1.31.7 / 1.30.6 security fixes (HTTP/3, TLS tickets, overflows)](https://pwn.watch/i/nginx-october-2026-advisories) ([json](https://pwn.watch/i/nginx-october-2026-advisories.json)): medium, closed, patched, started 2026-10-14, CVE-2026-15176, CVE-2026-93479, CVE-2026-95101…