Cloudflare Zero Trust Security Breach

Cloudflare Zero Trust is Cloudflare's replacement for traditional security perimeters, providing teams around the world with a platform for a faster, more secure Internet. Cloudflare Zero Trust suffers from a security vulnerability that stems from a lack of server-side authentication, where an...

PT-2023-25982 · Cloudflare · Cloudflare Warp

Name of the Vulnerable Software and Affected Versions: Cloudflare WARP affected versions not specified Description: The issue allows an attacker with local access to a device to extend the maximum allowed disconnected time of the WARP client granted by an override code. This is possible due to a...

Cloudflare Public Bug Bounty: Accessing apps protected via ZT's Access when user account is deleted/disabled even after clearing user session/seat

Server-side validation checks were implemented after access to SaaS apps protected via ZT's Access could be gained when a user account was deleted or disabled by preserving metadata of the Access JWT and using another active user account within the same organization, despite lacking proper...

LOL HTML 安全漏洞

LOL HTML is a low output latency streaming HTML rewriter/parser from Cloudflare open source. A security vulnerability exists in LOL HTML versions prior to 1.1.1, which stems from the fact that lol-html can cause certain HTML input to crash...

Cybercriminals Abusing Cloudflare R2 for Hosting Phishing Pages, Experts Warn

Threat actors' use of Cloudflare R2 to host phishing pages has witnessed a 61-fold increase over the past six months. "The majority of the phishing campaigns target Microsoft login credentials, although there are some pages targeting Adobe, Dropbox, and other cloud apps," Netskope security...

A week in security (August 7 - August 13)

Last week on Malwarebytes Labs: Zoom clarifies user consent requirement when training its AI Several hospitals still counting the cost of widespread ransomware attack Old exploit kits still kicking around in 2023 YouTube makes sweeping changes to tackle spam on Shorts videos Googles "browse...

HackerOne: Bypass of #2035332 RXSS at image.hackerone.live via the `url` parameter

A reflected cross-site scripting RXSS vulnerability was discovered on the image.hackerone.live website. The vulnerability allowed an attacker to bypass the fix implemented for a previous RXSS issue. By modifying the server's response to a HEAD request, the attacker could change the Content-Type a...

Cloudflare Tunnel increasingly abused by cybercriminals

Cloudflare Tunnel provides you with a secure way to connect your resources to Cloudflare without a publicly routable IP address. Cybercriminals are increasingly using this service to keep their activities from being detected. Cloudflare Tunnel, also known by its executable name, Cloudflared,...

Hackers Abusing Cloudflare Tunnels for Covert Communications

New research has revealed that threat actors are abusing Cloudflare Tunnels to establish covert communication channels from compromised hosts and retain persistent access. "Cloudflared is functionally very similar to ngrok," Nic Finn, a senior threat intelligence analyst at GuidePoint Security,...

@cfpreview/pages-e2e-test-runner-cli (>=0.0.9 <=0.0.25), @cloudflare/vite-plugin (>=0.0.0-0a9a26099 <=0.0.0-fec45ed61) +5 more potentially affected by CVE-2023-3348 via wrangler (>=0.0.0-a18155fb8 <=2.0.23)

wrangler NPM version =0.0.0-a18155fb8, =0.0.9, =0.0.0-0a9a26099, =0.0.1, =0.0.84-test.20250522015638, =1.0.0, =2.1.7 Source cves: CVE-2023-3348 Source advisory: OSV:GHSA-8C93-4HCH-XGXP...

GHSA-8C93-4HCH-XGXP Cloudflare Wrangler directory traversal vulnerability

Impact The Wrangler command line tool [email protected] or [email protected] was affected by a directory traversal vulnerability when running a local development server for Pages wrangler pages dev command. This vulnerability enabled an attacker in the same network as the victim to connect to the...

Cloudflare Wrangler directory traversal vulnerability

Impact The Wrangler command line tool [email protected] or [email protected] was affected by a directory traversal vulnerability when running a local development server for Pages wrangler pages dev command. This vulnerability enabled an attacker in the same network as the victim to connect to the...

CVE-2023-2754

The Cloudflare WARP client for Windows assigns loopback IPv4 addresses for the DNS Servers, since WARP acts as local DNS server that performs DNS queries in a secure manner, however, if a user is connected to WARP over an IPv6-capable network, te WARP client did not assign loopback IPv6 addresses...

CVE-2023-2754

The Cloudflare WARP client for Windows assigns loopback IPv4 addresses for the DNS Servers, since WARP acts as local DNS server that performs DNS queries in a secure manner, however, if a user is connected to WARP over an IPv6-capable network, te WARP client did not assign loopback IPv6 addresses...

Design/Logic Flaw

The Cloudflare WARP client for Windows assigns loopback IPv4 addresses for the DNS Servers, since WARP acts as local DNS server that performs DNS queries in a secure manner, however, if a user is connected to WARP over an IPv6-capable network, te WARP client did not assign loopback IPv6 addresses...

CVE-2023-2754 Plaintext transmission of DNS requests in Windows 1.1.1.1 WARP client

The Cloudflare WARP client for Windows assigns loopback IPv4 addresses for the DNS Servers, since WARP acts as local DNS server that performs DNS queries in a secure manner, however, if a user is connected to WARP over an IPv6-capable network, te WARP client did not assign loopback IPv6 addresses...

CVE-2023-2754

CVE-2023-2754 describes a vulnerability in the Cloudflare WARP Windows client where DNS queries can be exposed on the local network. When connected over an IPv6-capable network, the WARP client does not assign loopback IPv6 addresses; instead, it uses Unique Local Addresses, which under certain c...

CVE-2023-2754 Plaintext transmission of DNS requests in Windows 1.1.1.1 WARP client

The Cloudflare WARP client for Windows assigns loopback IPv4 addresses for the DNS Servers, since WARP acts as local DNS server that performs DNS queries in a secure manner, however, if a user is connected to WARP over an IPv6-capable network, te WARP client did not assign loopback IPv6 addresses...

CVE-2023-2754

The Cloudflare WARP client for Windows assigns loopback IPv4 addresses for the DNS Servers, since WARP acts as local DNS server that performs DNS queries in a secure manner, however, if a user is connected to WARP over an IPv6-capable network, te WARP client did not assign loopback IPv6 addresses...

CVE-2023-3348 Directory traversal vulnerability in Cloudflare Wrangler

The Wrangler command line tool [email protected] or [email protected] was affected by a directory traversal vulnerability when running a local development server for Pages wrangler pages dev command. This vulnerability enabled an attacker in the same network as the victim to connect to the local...