@cloudflare/workers-oauth-provider PKCE bypass via downgrade attack

Summary PKCE was implemented in the OAuth implementation in workers-oauth-provider that is part of MCP framework. However, it was found that an attacker could cause the check to be skipped. Impact PKCE is a defense-in-depth mechanism against certain kinds of attacks and was an optional extension ...

GHSA-QGP8-V765-QXX9 @cloudflare/workers-oauth-provider PKCE bypass via downgrade attack

Summary PKCE was implemented in the OAuth implementation in workers-oauth-provider that is part of MCP framework. However, it was found that an attacker could cause the check to be skipped. Impact PKCE is a defense-in-depth mechanism against certain kinds of attacks and was an optional extension ...

@iflow-mcp/git-mcp (1.0.0), mtmag (0.0.1) +4 more potentially affected by CVE-2025-4143 via @cloudflare/workers-oauth-provider (0.0.2)

@cloudflare/workers-oauth-provider NPM version 0.0.2 is affected by a known vulnerability. The following packages have a transitive dependency on @cloudflare/workers-oauth-provider and may be impacted: - @iflow-mcp/git-mcp 1.0.0 - mtmag 0.0.1 - mtmaiadmin =0.0.694, =0.0.1, =0.8.11, =0.8.17 Source...

North Korea Stole Your Job

For years, North Korea has been secretly placing young IT workers inside Western companies. With AI, their schemes are now more devious—and effective—than ever...

GHSA-VH4H-FVQF-Q9WV Duplicate Advisory: @cloudflare/workers-oauth-provider PKCE bypass via downgrade attack

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-qgp8-v765-qxx9. This link is maintained to preserve external references. Original Description PKCE was implemented in the OAuth implementation in workers-oauth-provider that is part of MCP framework...

GHSA-7CP4-JW97-3RC2 Duplicate Advisory: @cloudflare/workers-oauth-provider missing validation of redirect_uri on authorize endpoint

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-4pc9-x2fx-p7vj. This link is maintained to preserve external references. Original Description The OAuth implementation in workers-oauth-provider that is part of MCP framework...

Duplicate Advisory: @cloudflare/workers-oauth-provider missing validation of redirect_uri on authorize endpoint

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-4pc9-x2fx-p7vj. This link is maintained to preserve external references. Original Description The OAuth implementation in workers-oauth-provider that is part of MCP framework...

CVE-2025-4143

The OAuth implementation in workers-oauth-provider that is part of MCP framework https://github.com/cloudflare/workers-mcp , did not correctly validate that redirecturi was on the allowed list of redirect URIs for the given client registration. Fixed in: ...

CVE-2025-4144

PKCE was implemented in the OAuth implementation in workers-oauth-provider that is part of MCP framework https://github.com/cloudflare/workers-mcp . However, it was found that an attacker could cause the check to be skipped. Fixed in: https://github.com/cloudflare/workers-oauth-provider/pull/27...

CVE-2025-4143 Missing validation of redirect_uri on authorize endpoint

The OAuth implementation in workers-oauth-provider that is part of MCP framework https://github.com/cloudflare/workers-mcp , did not correctly validate that redirecturi was on the allowed list of redirect URIs for the given client registration. Fixed in: ...

PT-2025-18345 · Unknown · Workers-Oauth-Provider

Name of the Vulnerable Software and Affected Versions: workers-oauth-provider affected versions not specified Description: The issue is related to the OAuth implementation in workers-oauth-provider, part of the MCP framework. An attacker could cause the PKCE check to be skipped, completely...

workers-oauth-provider 安全漏洞

workers-oauth-provider is a Cloudflare open source OAuth provider library for Cloudflare Workers. A security vulnerability exists in workers-oauth-provider that stems from not properly verifying that the redirecturi is in the allowed list, which could lead to credential theft...

PT-2025-18344 · Unknown · Workers-Oauth-Provider

Name of the Vulnerable Software and Affected Versions: workers-oauth-provider affected versions not specified Description: The OAuth implementation in workers-oauth-provider did not correctly validate that the redirect uri was on the allowed list of redirect URIs for the given client registration...

workers-oauth-provider 安全漏洞

workers-oauth-provider is a Cloudflare open source OAuth provider library for Cloudflare Workers. A security vulnerability exists in workers-oauth-provider that stems from a PKCE check being bypassed, which could lead to a failure of the protection mechanism...

Employee monitoring app exposes users, leaks 21+ million screenshots

Unfortunately, spyware apps with poor reputations and even weaker security practices are all too common. I’ve lost count of how many blogs I’ve written about stalkerware-type apps that not only exposed the people they spied on but also ended up exposing the spies themselves. However, perhaps one...

OESA-2025-1422 firefox security update

Mozilla Firefox is a standalone web browser, designed for standards compliance and performance. Its functionality can be enhanced via a plethora of extensions. Security Fixes: If an attacker loaded a font using codeFontFace/code on a background worker, a use-after-free could have occurred, leadin...

OESA-2025-1265 firefox security update

Mozilla Firefox is a standalone web browser, designed for standards compliance and performance. Its functionality can be enhanced via a plethora of extensions. Security Fixes: When loading a script with Subresource Integrity, attackers with an injection capability could trigger the reuse of...

btrfs: flush delalloc workers queue before stopping cleaner kthread during unmount

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OESA-2025-1235 nodejs security update

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices...

Linux Distros Unpatched Vulnerability : CVE-2024-49867

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: wait for fixup workers before stopping cleaner kthread during umount During unmount, at closectree, we have the following steps in this order: 1 Park th...