CVE-2026-49757 OAuth2/OIDC account takeover in AshAuthentication via email-based user matching

Authentication Bypass by Spoofing vulnerability in team-alembic AshAuthentication allows account takeover of local users via OAuth2/OIDC sign-in. AshAuthentication's OAuth2 and OIDC family strategies matched the local user by email address an upsert on the email field, or a user-defined sign-in...

CVE-2026-42073

Summary: CVE-2026-42073 affects OpenClaude MCP OAuth callback flow. A logic flaw in the conditional order allows an attacker to bypass the CSRF state check when an error parameter is present, forcing the local OAuth callback server to shut down (DoS) without knowing the expected state. Affected c...

GHSA-PQ7P-MC74-G65W PocketBase vulnerable to account pre-hijacking via OAuth2 unverfied->verified autolinking upgrade

A pre-hijacking issue was discovered with the OAuth2 autolinking by Alardiians. In some situations, if an attacker knows the email address of the victim they can create and link an unverified PocketBase user in advance by authenticating with one of the OAuth2 app providers, e.g. "A". When the...

EUVD-2026-22758

OAuth2 Proxy's session cookies are not cleared when rendering sign-in page...

Deserialization of Untrusted Data

Overview devcode-it/openstamanager is a management software for technical assistance and electronic invoicing Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the unserialize process of the accesstoken field in the OAuth2 configuration flow, where...

EUVD-2026-16563

Dovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache is enabled, and username is altered in passdb, then OTP credentials can be cached so that same OTP reply is valid. An attacker able to observe an OTP exchange is able to log in as the user. If...

ALPINE-CVE-2026-27855

Dovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache is enabled, and username is altered in passdb, then OTP credentials can be cached so that same OTP reply is valid. An attacker able to observe an OTP exchange is able to log in as the user. If...

CVE-2026-33720

n8n is an open source workflow automation platform. Prior to version 2.8.0, when the N8NSKIPAUTHONOAUTHCALLBACK environment variable is set to true, the OAuth callback handler skips ownership verification of the OAuth state parameter. This allows an attacker to trick a victim into completing an...

GHSA-FMFG-9G7C-3VQ7 ha-mcp OAuth 2.1 DCR mode enables network reconnaissance via an error oracle

Summary The ha-mcp OAuth consent form beta feature accepts a user-supplied haurl and makes a server-side HTTP request to haurl/api/config with no URL validation. An unauthenticated attacker can submit arbitrary URLs to perform internal network reconnaissance via an error oracle. Two additional co...

UBUNTU-CVE-2026-28802

Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before version 1.6.7, previous tests involving passing a malicious JWT containing alg: none and an empty signature was passing the signature verification step without any changes to the application co...

CVE-2026-28802

Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before version 1.6.7, previous tests involving passing a malicious JWT containing alg: none and an empty signature was passing the signature verification step without any changes to the application co...

CVE-2026-1693

The OAuth grant type Resource Owner Password Credentials ROPC flow is still used by the werbservices used by the WebVue, WebScheduler, TouchVue and Snapvue features of PcVue in version 12.0.0 through 16.3.3 included despite being deprecated. It might allow a remote attacker to steal user...

CVE-2025-66040

Spotipy is a Python library for the Spotify Web API. Prior to version 2.25.2, there is a cross-site scripting XSS vulnerability in the OAuth callback server that allows for JavaScript injection through the unsanitized error parameter. Attackers can execute arbitrary JavaScript in the user's brows...

Cross-site Scripting (XSS)

Overview spotipy is an A light weight Python library for the Spotify Web API Affected versions of this package are vulnerable to Cross-site Scripting XSS via the RequestHandler.doGET function due to the error parameter in the OAuth callback server. An attacker can execute arbitrary JavaScript in...

Unintended Proxy or Intermediary ('Confused Deputy')

Overview fastmcp is a The fast, Pythonic way to build MCP servers and clients. Affected versions of this package are vulnerable to Unintended Proxy or Intermediary 'Confused Deputy' during the authentication with OAuth providers that don't support Dynamic Client Registration DCR. An attacker can...

EUVD-2025-34628

When a BIG-IP APM OAuth access profile Resource Server or Resource Client is configured on a virtual server, undisclosed traffic can cause the apmd process to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

Cursor 操作系统命令注入漏洞

Cursor is an AI code editor from Cursor open source. An operating system command injection vulnerability exists in Cursor 1.7 and earlier versions, which stems from the possibility that specially crafted commands may be returned during the OAuth authentication process, potentially leading to...

The vulnerability of the OAuth and OpenID Connect Single Sign On module in Drupal CMS systems allows attackers to perform cross-site scripting attacks.

The vulnerability of the OAuth and OpenID Connect Single Sign On module in Drupal systems is related to the lack of protective measures for the website structure. Exploiting this vulnerability allows a malicious actor to perform cross-site scripting attacks remotely...

[SECURITY] Fedora 40 Update: perl-Net-OAuth-0.30-1.fc40

Perl implementation of OAuth, an open protocol to allow secure API authentication in a simple and standard method from desktop and web applications. In practical terms, a mechanism for a Consumer to request protected resources from a Service Provider on behalf of a user...

[SECURITY] Fedora 41 Update: perl-Net-OAuth-0.30-1.fc41

Perl implementation of OAuth, an open protocol to allow secure API authentication in a simple and standard method from desktop and web applications. In practical terms, a mechanism for a Consumer to request protected resources from a Service Provider on behalf of a user...