SUSE CVE-2026-16615

A flaw was found in librest. The PKCE implementation for OAuth authorization uses the GRand function from the GLib API, a cryptographically insecure pseudo-random number generator. Because the generated "code verifier" lacks sufficient cryptographic entropy, a malicious actor can reverse-engineer...

PT-2026-64432

Name of the Vulnerable Software and Affected Versions Cloudreve versions prior to 4.17.0 Description Any logged-in user can enumerate and retrieve email addresses and profile metadata including nicknames, avatars, creation time, and profile share-visibility of inactive or banned accounts. This...

Grafana Labs < 11.6.15 / 12.2.0 < 12.2.9 / 12.3.0 < 12.3.7 / 12.4.0 < 12.4.4 / 13.0.0 < 13.0.2 Multiple Vulnerabilities

The version of Grafana Labs installed on the remote host is affected by multiple vulnerabilities, including: - The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily...

PT-2026-64435

Name of the Vulnerable Software and Affected Versions Cloudreve versions prior to 4.17.0 Description An OAuth scope authorization bypass exists in the admin storage policy routes. A user with an OAuth bearer token scoped only to Admin.Read can access the 'POST /api/v4/admin/policy/oauth/signin'...

Improper Verification of Source of a Communication Channel

Overview next-auth is an Authentication for Next.js Affected versions of this package are vulnerable to Improper Verification of Source of a Communication Channel via improper binding of OAuth check cookies to the provider that created them. An attacker can gain unauthorized access to a victim's...

PYSEC-2026-3467 garminconnect Has Insecure Permission Assignment for Garmin OAuth Token Store

Insecure Permission Assignment for Garmin OAuth Token Store Summary garminconnect ≤ 0.3.4 wrote its OAuth token store to disk without restricting file-system permissions. Under the default Linux umask 022 the token file garmintokens.json was created world-readable 0o644. The file contains the DI...

EUVD-2026-42359

LiteLLM: MCP Authentication Bypass via OAuth2 Passthrough Fallback...

NPM: n8n: Member-Level Users Can Execute Other Users' MCP Server Trigger Workflows via Missing OAuth Authorization Check

NPM: n8n: Member-Level Users Can Execute Other Users' MCP Server Trigger Workflows via Missing OAuth Authorization Check vulnerability discovered by ? in WordPress Npm n8n versions 2.29.8...

Incorrect Authorization

Overview @n8n/n8n-nodes-langchain is a Affected versions of this package are vulnerable to Incorrect Authorization in the OAuth 2.1 authorization. An attacker can gain unauthorized access to another user's workflow and execute it with the owner's credentials by registering an OAuth client and...

GHSA-Q5XF-XHWF-CWQF n8n: Member-Level Users Can Execute Other Users' MCP Server Trigger Workflows via Missing OAuth Authorization Check

Impact The OAuth 2.1 consent and token-issuance flow introduced in n8n 2.27.0 does not verify that the authenticated user has access to the workflow referenced as the OAuth resource. A member-level user can register an OAuth client, self-approve consent for another user's n8n OAuth2-protected MCP...

CVE-2026-16615

The CVE affects librest where the PKCE implementation relies on GLib’s GRand PRNG, which is cryptographically insecure. This leads to insufficient entropy in the code verifier, enabling an attacker to reverse‑engineer the PRNG seed and predict or reconstruct the code verifier, thereby bypassing P...

EUVD-2026-47742

A flaw was found in librest. The PKCE implementation for OAuth authorization uses the GRand function from the GLib API, a cryptographically insecure pseudo-random number generator. Because the generated "code verifier" lacks sufficient cryptographic entropy, a malicious actor can reverse-engineer...

Duplicate Advisory: GraphQL Node Bypasses "Allowed HTTP Request Domains" Restriction

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-gq66-9cw5-j5jm. This link is maintained to preserve external references. Original Description n8n before 1.123.64, 2.29.8, and 2.30.1 fails to enforce the "Allowed HTTP Request Domains" restriction on HTTP-based...

GHSA-5VFW-JC4P-FJ39 Duplicate Advisory: Member-Level Users Can Execute Other Users' MCP Server Trigger Workflows via Missing OAuth Authorization Check

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-q5xf-xhwf-cwqf. This link is maintained to preserve external references. Original Description n8n before 2.29.8 and 2.30.x before 2.30.1 affected from 2.27.0, when the OAuth 2.1 consent and token-issuance flow w...

CVE-2026-65594

n8n before 2.29.8 and 2.30.x before 2.30.1 affected from 2.27.0, when the OAuth 2.1 consent and token-issuance flow was introduced does not verify that the authenticated user has access to the workflow referenced as the OAuth resource. On instances with at least one active MCP Server Trigger...

CVE-2026-65594 n8n before 2.30.1 Missing OAuth Authorization Check

n8n before 2.29.8 and 2.30.x before 2.30.1 affected from 2.27.0, when the OAuth 2.1 consent and token-issuance flow was introduced does not verify that the authenticated user has access to the workflow referenced as the OAuth resource. On instances with at least one active MCP Server Trigger...

EUVD-2026-41605

Gitea: Improper authorization on OAuth sign-in callback silently re-enables administrator-disabled accounts...

Gitea: OAuth2 sign-in reactivates an administrator-deactivated account on auth sources without refresh tokens (incomplete fix of #38009)

Description Gitea's OAuth2 sign-in callback reactivates a deactivated user account IsActive=false when the user signs in through an authentication source that does not issue refresh tokens notably GitHub, and any OIDC/OAuth2 source configured without offlineaccess. PR 38009 added a gate intended ...

Insertion of Sensitive Information Into Sent Data

Overview Affected versions of this package are vulnerable to Insertion of Sensitive Information Into Sent Data via the GET /login/oauth/userinfo endpoint. An attacker can access identity claims such as email and groups by supplying a personal access token with insufficient scopes as a bearer...

Improper Authentication

Overview Affected versions of this package are vulnerable to Improper Authentication via the CreateAccessToken process. An attacker can gain elevated privileges by supplying a restricted token in the Authorization: Basic :x-oauth-basic format, which bypasses authentication checks and allows...