Malicious code in @toptal/davinci-cloudflare-requests-handler (npm)

The package communicates with a domain associated with malicious activity...

From Cloudflare Bypass to Credit Card Theft

Introduction On July 6, 2025, a suspicious Python package called 'cloudscrapersafe' was uploaded to the Python Package Index PyPI. Marketed as a utility to evade Cloudflare’s anti-bot protections, this package was a modified version of a widely used 'cloudscraper' library, which is used to automa...

From .pth to p0wned: Abuse of Pickle Files in AI Model Supply Chains

Executive summary Recent threat research highlights a growing risk in the Python and machine learning ML ecosystem: the exploitation of serialized model files, specifically those using Python’s pickle module. While commonly used for saving and loading ML models, pickle files can execute arbitrary...

Information Disclosure

@cloudflare/vite-plugin is vulnerable to information disclosure. The vulnerability is due to the default configuration exposing all files via the local development server, which allows an attacker to access sensitive files like .env and .dev.vars that may contain secrets...

Cloudflare Vite plugin exposes secrets over the built-in dev server

Summary Note: originally posted on H1 but closed. Cross-posting over to here in abundance of caution instead of a public issue. When utilising the Cloudflare Vite plugin in its default configuration, all files are exposed by the local dev server, including files in the root directory that contain...

GHSA-4PFG-2MW5-F8JX Cloudflare Vite plugin exposes secrets over the built-in dev server

Summary Note: originally posted on H1 but closed. Cross-posting over to here in abundance of caution instead of a public issue. When utilising the Cloudflare Vite plugin in its default configuration, all files are exposed by the local dev server, including files in the root directory that contain...

PT-2025-30105 · Npm · @Cloudflare/Vite-Plugin

Summary Note: originally posted on H1 but closed. Cross-posting over to here in abundance of caution instead of a public issue. When utilising the Cloudflare Vite plugin in its default configuration, all files are exposed by the local dev server, including files in the root directory that contain...

PT-2025-38576

Name of the Vulnerable Software and Affected Versions: Cloudflare Vite plugin versions prior to 1.6.0 Description: The Cloudflare Vite plugin, when used with its default configuration, exposes files from the root directory via the local development server. This includes sensitive files such as .e...

The vulnerability of the software implementing the transport protocols QUIC and HTTP/3 in CloudFlare Quiche allows attackers to cause service interruptions due to unlimited resource distribution.

The vulnerability of the software implementing the transport protocols QUIC and HTTP/3 in CloudFlare Quiche lies in the fact that data is sent at a speed that exceeds the actual path support provided by the system due to unlimited resource distribution. Exploiting this vulnerability can allow a...

⚡ Weekly Recap: Chrome 0-Day, 7.3 Tbps DDoS, MFA Bypass Tricks, Banking Trojan and More

Not every risk looks like an attack. Some problems start as small glitches, strange logs, or quiet delays that don't seem urgent—until they are. What if your environment is already being tested, just not in ways you expected? Some of the most dangerous moves are hidden in plain sight. It's worth...

CVE-2025-4820

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4821

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

Server Side Request Forgery (SSRF)

@opennextjs/cloudflare is vulnerable to Server-Side Request Forgery SSRF. The vulnerability is due to an unimplemented feature in the Cloudflare adapter for Open Next, allows unauthenticated users to proxy arbitrary remote content via the /next/image endpoint...

CVE-2025-6087

A Server-Side Request Forgery SSRF vulnerability was identified in the @opennextjs/cloudflare package. The vulnerability stems from an unimplemented feature in the Cloudflare adapter for Open Next, which allowed unauthenticated users to proxy arbitrary remote content via the /next/image endpoint...

CVE-2025-4820

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4821

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4821 Incorrect congestion window growth by invalid ACK ranges

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4821

CVE-2025-4821 affects Cloudflare’s quiche (QUIC) prior to 0.24.4. The issue is “Incorrect congestion window growth” caused by processing invalid ACK ranges. An unauthenticated remote attacker can complete a handshake, initiate a congestion-controlled transfer, and send ACK frames covering a large...

CVE-2025-4821 Incorrect congestion window growth by invalid ACK ranges

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4820

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...