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[ARTICLE · art-34361] src=news.ycombinator.com ↗ pub= topic=ai-safety verified=true sentiment=↓ negative

Tell HN: A new Nginx 0-day just dropped

Nebula Security disclosed a new Nginx remote code execution 0-day affecting Fortune 500 companies. The vulnerability impacts Nginx Open Source versions 1.31.0 and 1.31.1 with HTTP/3 or QUIC enabled. Users are urged to upgrade to version 1.31.2 or disable QUIC immediately.

read1 min views1 publishedJun 18, 2026

| |||||||||||| 7 points by | We (Nebula Security) just dropped a nginx remote code execution 0-day. This vulnerability affect dozens of fortune 500 companies and we disclosed to nginx team immediately. This 0-day is the third nginx bug that receives "major" rating since 2014. ( To check if your server is impacted:

  1. You are running NGINX Open Source v1.31.0 or v1.31.1

  2. Your NGINX configuration enables HTTP/3 / QUIC

Immediate action:

  1. Upgrade NGINX to v1.31.2 or later
  
  2. If you cannot upgrade immediately, disable QUIC / HTTP/3 until you can patch

Shameless plug: this is the second nginx RCE 0-day we found in a month, using our security agent VEGA. (see our first nginx RCE at In the meantime, if you are interesting in trying VEGA on your codebase, reach out at etenz@nebusec.ai. | ||||||||||| |

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