OAuth redirection abuse enables phishing and malware delivery

Microsoft observed phishing-led exploitation of OAuth’s by-design redirection mechanisms. The activity targets government and public-sector organizations and uses silent OAuth authentication flows and intentionally invalid scopes to redirect victims to attacker-controlled infrastructure without...

EUVD-2026-9083

Gradio is an open-source Python package designed for quick prototyping. Prior to version 6.6.0, the redirecttotarget function in Gradio's OAuth flow accepts an unvalidated targeturl query parameter, allowing redirection to arbitrary external URLs. This affects the /logout and /login/callback...

CVE-2026-1695

An XSS vulnerability affects the OAuth web services used by the WebVue, WebScheduler, TouchVue and SnapVue features of PcVue in version 12.0.0 through 16.3.3 included. It might allow a remote attacker to trick a legitimate user into loading content from another site upon unsuccessful user...

CVE-2026-1695

An XSS vulnerability affects the OAuth web services used by the WebVue, WebScheduler, TouchVue and SnapVue features of PcVue in version 12.0.0 through 16.3.3 included. It might allow a remote attacker to trick a legitimate user into loading content from another site upon unsuccessful user...

CVE-2026-1695 XSS vulnerability upon unsuccessful authentication

An XSS vulnerability affects the OAuth web services used by the WebVue, WebScheduler, TouchVue and SnapVue features of PcVue in version 12.0.0 through 16.3.3 included. It might allow a remote attacker to trick a legitimate user into loading content from another site upon unsuccessful user...

CVE-2026-1695 XSS vulnerability upon unsuccessful authentication

An XSS vulnerability affects the OAuth web services used by the WebVue, WebScheduler, TouchVue and SnapVue features of PcVue in version 12.0.0 through 16.3.3 included. It might allow a remote attacker to trick a legitimate user into loading content from another site upon unsuccessful user...

CLSA-2026-1771664389 curl: Fix of 2 CVEs

CVE-2025-14524: fix OAuth2 bearer token leak on cross-protocol redirect - CVE-2025-15224: fix libssh public-key auth fallback to SSH agent...

EUVD-2025-206881

The OAuth Single Sign On – SSO OAuth Client plugin for WordPress is vulnerable to unauthorized access in all versions up to, and including, 6.26.14. This is due to missing capability checks and authentication verification on the OAuth redirect functionality accessible via the 'oauthredirect' opti...

EUVD-2025-206747

A flaw was found in Moodle. An open redirect vulnerability in the OAuth login flow allows a remote attacker to redirect users to attacker-controlled pages after they have successfully authenticated. This occurs due to insufficient validation of redirect parameters, which could lead to phishing...

CVE-2025-67852

A flaw was found in Moodle. An open redirect vulnerability in the OAuth login flow allows a remote attacker to redirect users to attacker-controlled pages after they have successfully authenticated. This occurs due to insufficient validation of redirect parameters, which could lead to phishing...

Moodle 安全漏洞

Moodle is an open-source e-learning software platform developed by Moodle Foundation. It is also known as a course management system, learning management system, or virtual learning environment. Moodle has security vulnerabilities, which stem from insufficient validation of redirect parameters in...

CVE-2026-25221

PolarLearn is a free and open-source learning program. In 0-PRERELEASE-15 and earlier, the OAuth 2.0 implementation for GitHub and Google login providers is vulnerable to Login Cross-Site Request Forgery CSRF. The application fails to implement and verify the state parameter during the...

EUVD-2026-4729

sigstore-python is a Python tool for generating and verifying Sigstore signatures. Prior to version 4.2.0, the sigstore-python OAuth authentication flow is susceptible to Cross-Site Request Forgery. OAuthSession creates a unique "state" and sends it as a parameter in the authentication request bu...

sigstore-python Cross-Site Request Forgery Vulnerability

sigstore-python is an open-source tool developed by sigstore for generating and verifying Sigstore signatures in Python. Versions of sigstore-python prior to 4.2.0 contained a cross-site request forgeing vulnerability. This vulnerability stemmed from the OAuth authentication process’s...

CVE-2026-21618 Cross-site scripting (XSS) in OAuth Device Authorization screen

Improper Neutralization of Input During Web Page Generation XSS or 'Cross-site Scripting' vulnerability in hexpm hexpm/hexpm 'Elixir.HexpmWeb.SharedAuthorizationView' modules allows Cross-Site Scripting XSS. This vulnerability is associated with program files...

SUSE CVE-2017-18905

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2, when used as an OAuth 2.0 service provider, Session invalidation was mishandled...

GO-2026-4306 Mattermost Server has Insufficient Session Expiration when used as an OAuth 2.0 service provider in github.com/mattermost/mattermost-server

Mattermost Server has Insufficient Session Expiration when used as an OAuth 2.0 service provider in github.com/mattermost/mattermost-server...

EUVD-2025-206267

Authlib has 1-click Account Takeover vulnerability...

Petlibro Smart Pet Feeder Platform 安全漏洞

Petlibro Smart Pet Feeder Platform is a smart pet management system from Petlibro. A security vulnerability exists in Petlibro Smart Pet Feeder Platform version 1.7.31 and earlier, which stems from a flaw in OAuth token authentication that could lead to authentication bypass...

CVE-2025-68481 FastAPI Users Vulnerable to 1-click Account Takeover in Apps Using FastAPI SSO

FastAPI Users allows users to quickly add a registration and authentication system to their FastAPI project. Prior to version 15.0.2, the OAuth login state tokens are completely stateless and carry no per-request entropy or any data that could link them to the session that initiated the OAuth flo...