CVE-2026-58399

The CVE affects @acastellon/auth (authentication control for microservices). Versions

CVE-2026-58399

@acastellon/auth is an authentication control system for microservices. Versions prior to 2.3.0 appear to allow an unauthenticated authentication bypass in validateToken through spoofable auth-user and Host request headers. The validateToken middleware contains a service-to-service bypass for...

CVE-2026-27882

Coolify prior to 4.0.0-beta.461 uses a non-constant-time string comparison (!=) to validate the GitLab webhook secret token, enabling timing-based disclosure of the secret. The issue is fixed in 4.0.0-beta.461. Remediation: upgrade to 4.0.0-beta.461.

CVE-2026-27882 Coolify: Timing Attack in GitLab Webhook Token Validation

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.461, the GitLab webhook endpoint uses a non-constant-time string comparison operator !== to validate the webhook secret token. This implementation is vulnerable to timing attack...

PraisonAI Has Authentication Bypass via OAuthManager.validate_token()

SummaryOAuthManager.validatetoken returns True for any token not found in its internal store, which is empty by default. Any HTTP request to the MCP server with an arbitrary Bearer token is treated as authenticated, granting full access to all registered tools and agent capabilities...

PYSEC-2026-468 PraisonAI Has Authentication Bypass via OAuthManager.validate_token()

Summary OAuthManager.validatetoken returns True for any token not found in its internal store, which is empty by default. Any HTTP request to the MCP server with an arbitrary Bearer token is treated as authenticated, granting full access to all registered tools and agent capabilities. Details...

PYSEC-2026-315 Cobbler Improper Validation of Security Tokens

Cobbler version Verified as present in Cobbler versions 2.6.11+, but code inspection suggests at least 2.0.0+ or possibly even older versions may be vulnerable contains a Incorrect Access Control vulnerability in XMLRPC API /cobblerapi that can result in Privilege escalation, data manipulation or...

Cobbler Improper Validation of Security Tokens

Cobbler version Verified as present in Cobbler versions 2.6.11+, but code inspection suggests at least 2.0.0+ or possibly even older versions may be vulnerable contains a Incorrect Access Control vulnerability in XMLRPC API /cobblerapi that can result in Privilege escalation, data manipulation or...

PT-2026-53545

Summary OAuthManager.validate token returns True for any token not found in its internal store, which is empty by default. Any HTTP request to the MCP server with an arbitrary Bearer token is treated as authenticated, granting full access to all registered tools and agent capabilities. Details...

GO-2026-5706 googleapis/mcp-toolbox: authentication bypass vulnerability in the generic opaque token validation path (validateOpaqueToken) in github.com/googleapis/mcp-toolbox

googleapis/mcp-toolbox: authentication bypass vulnerability in the generic opaque token validation path validateOpaqueToken in github.com/googleapis/mcp-toolbox...

GO-2026-5432 Mattermost doesn't validate that the RefreshedToken differs from the original invite token during remote cluster invite confirmation in github.com/mattermost/mattermost-server

Mattermost doesn't validate that the RefreshedToken differs from the original invite token during remote cluster invite confirmation in github.com/mattermost/mattermost-server. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standar...

GO-2026-5505 Portainer's Kubernetes middleware continues after token validation failure, bypassing endpoint authorization in github.com/portainer/portainer

Portainer's Kubernetes middleware continues after token validation failure, bypassing endpoint authorization in github.com/portainer/portainer. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is...

GO-2026-5251 googleapis/mcp-toolbox: authentication bypass vulnerability in the generic opaque token validation path (validateOpaqueToken) in github.com/googleapis/mcp-toolbox

googleapis/mcp-toolbox: authentication bypass vulnerability in the generic opaque token validation path validateOpaqueToken in github.com/googleapis/mcp-toolbox...

CVE-2026-54090

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.33.8, when a shell interpreter is configured e.g. /bin/sh -c, the command allowlist can be bypassed through shell metacharacters. The allowlist...

CVE-2026-12112 Foreman-mcp-server: mcp server: active session hijacking via insecure session state reuse

A flaw was found in the foreman-mcp-server. A session management vulnerability in the MCP Server allows unauthenticated attackers to hijack active administrative sessions due to an improper cache of authenticated client connections, by trusting a non-secret session ID without re-validating...

CVE-2026-12112 Foreman-mcp-server: mcp server: active session hijacking via insecure session state reuse

A flaw was found in the foreman-mcp-server. A session management vulnerability in the MCP Server allows unauthenticated attackers to hijack active administrative sessions due to an improper cache of authenticated client connections, by trusting a non-secret session ID without re-validating...

CVE-2026-54308 n8n: Missing Token Validation on Microsoft Agent 365 Trigger Node

n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, the MicrosoftAgent365Trigger and StripeTrigger node did not validate that inbound requests. As a result, an unauthenticated attacker who knows the webhook URL could submit a forged payload and cause the workflow to...

CVE-2026-54308 n8n: Missing Token Validation on Microsoft Agent 365 Trigger Node

n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, the MicrosoftAgent365Trigger and StripeTrigger node did not validate that inbound requests. As a result, an unauthenticated attacker who knows the webhook URL could submit a forged payload and cause the workflow to...

CVE-2026-54308 n8n: Missing Token Validation on Microsoft Agent 365 Trigger Node

n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, the MicrosoftAgent365Trigger and StripeTrigger node did not validate that inbound requests. As a result, an unauthenticated attacker who knows the webhook URL could submit a forged payload and cause the workflow to...

CVE-2026-54308

CVE-2026-54308 affects the n8n platform, specifically versions prior to 2.25.7 and 2.26.2. The MicrosoftAgent365Trigger and StripeTrigger nodes did not validate inbound requests, enabling an unauthenticated attacker who knows the webhook URL to submit a forged payload and cause workflow execution...