{"type":"post","id":"tenable-public-pocs-and-a-first-in-the-d9ad85","slug":"tenable-public-pocs-and-a-first-in-the-d9ad85","title":"Tenable: public PoCs and a first in-the-wild exploitation attempt for Brotli flaw CVE-2026-111497, with fixes now in .NET and PHP for Windows","description":"Tenable says public proofs of concept now exist for CVE-2026-111497, an out-of-bounds write in Google’s Brotli decoder, and reports a first attempted exploitation against a vulnerable Node.js release.","retrieval_nugget":"Tenable says public proofs of concept now exist for CVE-2026-111497, an out-of-bounds write in Google’s Brotli decoder, and reports a first attempted exploitation against a vulnerable Node.js release. Builders should treat this as a dependency and deployment inventory problem, not merely a Node.js update.","published_at":"2026-10-27","updated_at":"2026-10-27","record_date":"2026-10-27","date_kind":"published_at","topics":["google"],"entities":["Tenable","Google Brotli","CVE-2026-111497","Node.js","Microsoft .NET","Bun","Envoy Proxy","Istio"],"related_patterns":[],"novelty_label":"new_fact","what_changed":"Tenable reports public proof-of-concept exploits and a first attempted in-the-wild exploitation, plus fixes now available in .NET and PHP for Windows.","prior_refs":["memory:106f4939-e4cb-8845-aad7-5e85f28fe45b","memory:04f45bc0-79d6-8bf1-a03d-35dff8a20562","memory:6ccf1202-8bae-8137-a5be-92f10b8d817e"],"source_url":"https://www.tenable.com/blog/brotli2shell-frequently-asked-questions-for-google-brotli-decoder-cve-2026-111497","source_urls":["https://www.tenable.com/blog/brotli2shell-frequently-asked-questions-for-google-brotli-decoder-cve-2026-111497"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:tenable-public-pocs-and-a-first-in-the-d9ad85","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/tenable-public-pocs-and-a-first-in-the-d9ad85/","markdown":"https://newruntime.com/posts/tenable-public-pocs-and-a-first-in-the-d9ad85.md","json":"https://newruntime.com/posts/tenable-public-pocs-and-a-first-in-the-d9ad85.json"},"next_reads":[{"type":"topic","path":"/topics/google/","url":"https://newruntime.com/topics/google/","title":"Google","reason":"Explore the google topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/google.md","json_url":"https://newruntime.com/topics/google.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}