#HTML2shell

CISA has confirmed that hackers are actively exploiting a critical Brotli vulnerability (CVE-2026-111497), also known as Node2Shell, Broccoli2Shell, and HTTP2Shell.

We made a website to check if your http client is vulnerable to CVE-2026-111497 (Node2Shell/HTTP2Shell) Also open-source: Some examples:

CVE-2026-111497: a crafted Brotli stream turns Python's decoder into an execution primitive. In our lab it yielded a cross-machine reverse shell via aiohttp's auto br-decompression. #python2shell #http2shell #py2shell #CVE2026111497 #RCE #InfoSec #Python #Brotli #PatchNow

HTTP2Shell: What the Critical Brotli Vulnerability Means for WordPress Sites

HTTP2Shell (CVE-2026-111497) is exploitable outside Node. Unauth RCE against a pinned vulnerable Docker Official Image for WordPress via /xmlrpc.php. One inbound ASLR on, no leak or cross-request grooming. PoC:

php2shell and http2shell have been all over the timeline these past few days. But how hard are they to actually exploit? Let's find out: and Pop an RCE, grab the flag and take the $1K BTC AND watch live

HAProxy is NOT vulnerable to the new HTTP2Shell vulnerability (CVE-2026-111497). While HAProxy Community and HAProxy Enterprise are safe, your backend applications might still be at risk. The good news? You can use HAProxy to block the attack vector at the edge while you patch your fleet. Read our latest advisory to get the stopgap configuration and secure your infrastructure today:

Node2Shell, HTTP2Shell, Broccoli2Shell : une seule faille Brotli (CVE-2026-111497), et après Node.js, Python, .NET et Linux publient leurs correctifs. Voici l'essentiel à savoir : 👉 #cybersécurité #python #dotnet

HTML2Shell is a joke, a fake 10.0 CVE record posted on X on October 24. Its number belongs to an unrelated Kirby CMS bug. The real one is HTTP2Shell, a Brotli decoder bug rated 9.2 Critical.

HTTP2Shell: What the Critical Brotli Vulnerability Means for WordPress Sites Update Brotli to version 1.0.10, 1.1.1, 1.2.1 as soon as possible.

🆘Node2Shell. Broccoli2Shell. HTTP2Shell. three names. one Brotli bug. CISA says it's being exploited. and it's not just a Node problem anymore. anything that decodes Brotli with a vulnerable library is in scope. Microsoft already pushed emergency .NET patches. the step everyone skips: → update → restart the process → rebuild and redeploy your container images a patched host doesn't fix the old Node binary baked into last month's image.

eMudhra. PHP. Now HTTP2Shell. Three critical vulnerabilities in just over a week, and the scariest part is what you can’t see. Join TrendAI’s webinar Oct 29, 11 AM. EDT.

Almost every app unpacks data silently. A flaw called Broccoli2Shell, Node2Shell, or HTTP2Shell (CVE-2026-111497) needs no password to exploit. Swipe through >>> #CyberSecurity #CVE #CloudSecurity

The danger of HTTP2Shell is very real. The libbrotli 🥦vulnerability affects a wide range of software, patch now (CVE-2026-111497) We've achieved unauth RCE in Docker's official WordPress image abusing the well known /xmlrpc.php endpoint, we call it the pingback of hell :)

Three security stories every IT team should be watching: PHP2Shell: CISA confirms two critical PHP flaws are being exploited, allowing remote code execution on unpatched servers. Ottawa even pulled some federal sites offline as a precaution. Update PHP now. HTTP2Shell, the Brotli flaw, is now on CISA's exploited list too. Patch Node.js and anything bundling Brotli. In Canada, a breach at vendor Navigate360 exposed about 1.5M Crime Stoppers tips. Your vendor's risk is your risk. The takeaway: patch windows are now measured in days. What's your team tackling first? #CyberSecurity

One Brotli bug, four nicknames: Node2Shell, HTTP2Shell, Python2Shell, Broccoli2Shell. CVE-2026-111497 (CVSS 9.2) hits Node.js, Bun, Python, Envoy, .NET via Content-Encoding: br. Found by OpenAI Codex Security. Fix: Node 22.23.4 / 24.22.1 / 26.12.1 Check: node -v

In the last week: decade-old PHP bugs put much of the web at risk, AI agents broke into 100+ company websites mostly on their own, and coding agents got hijacked by a text file. 12 years in, I've never been this worried. What's happening + what I'm changing 🧵

3/ PHP2Shell (Oct 21): AI-assisted research found flaws hiding in PHP since v5.4, 10+ years. CVSS 9.2. PHP runs ~70% of websites. The NSA said update or take servers offline. Cloudflare saw thousands of exploit attempts before the announcement, then millions within hours.

4/ Same day, a second one: a critical bug in Brotli, the compression library inside Node.js, Python HTTP clients, .NET and more. You may know it as Node2Shell, HTTP2Shell or Broccoli2Shell. Its fix sat in public code since Feb. CISA now says it's being exploited.

🚨 HTTP2Shell: A critical Brotli flaw can cause memory corruption, crash PHP processes, or potentially enable remote code execution. Windows PHP users should install the patched builds immediately. 🔗 #CyberSecurity #AgentBeam

Zero Trust connectivity won’t fix the vulnerable code. What it does is take away what attackers need. If a service has no open listening ports, an unauthenticated attacker has nowhere to send the payload.

#WeAreCyberHunters 🌐 🌍 HTTP2Shell (CVE-2026-111497): Brotli bug hits Node.js/.NET/Python; PoCs public. Update Brotli & Node.js, then restart and rebuild images. #HTTP2Shell @Astaroth_WH @CyberHuntersOp @mstrbotnet @YourAnonShadows @YourAnonHunters