CVE-2026-8505

CVE-2026-8505 affects Langflow OSS 1.0.0–1.10.0. A flaw in the webhook authentication logic bypasses API key validation when WEBHOOK_AUTH_ENABLE is False (default), allowing unauthenticated remote execution of any flow and potentially RCE/DoS. IBM’s bulletin confirms the vulnerability and that th...

CVE-2026-56261

Crawl4AI before 0.8.7 contains a server-side request forgery SSRF vulnerability in the Docker API server's /crawl/job and /llm/job endpoints, which accept webhook URLs without destination validation. An attacker can supply webhook URLs pointing to private or internal IP ranges, Docker networks, o...

CVE-2026-57952

Mythic before 3.4.0.60 contains an authorization bypass vulnerability in four REST endpoints c2profileconfigcheckwebhook, c2profileredirectruleswebhook, c2profilegetiocwebhook, c2profilesamplemessagewebhook that fail to verify payload ownership. An operator in one operation can invoke these...

EUVD-2026-40169

Mythic before 3.4.0.60 contains an authorization bypass vulnerability in four REST endpoints c2profileconfigcheckwebhook, c2profileredirectruleswebhook, c2profilegetiocwebhook, c2profilesamplemessagewebhook that fail to verify payload ownership. An operator in one operation can invoke these...

CVE-2026-54303

Summary of CVE-2026-54303 (n8n): An endpoint in the Meta and Microsoft Teams trigger nodes reflects a query parameter into the HTTP response without sanitization or CSP headers, enabling reflected XSS in the n8n origin when a logged-in user visits a crafted URL. Affected component: n8n trigger no...

CVE-2026-54303 n8n: Reflected XSS via Facebook, WhatsApp, and Microsoft Teams Trigger Webhook Verification Endpoints

n8n is an open source workflow automation platform. Prior to 2.24.0, an endpoint in the Meta and Microsoft Teams trigger nodes reflects a query parameter into the HTTP response without sanitization or Content-Security-Policy headers, enabling reflected XSS in the n8n origin when a logged-in user...

CVE-2026-56295

Capgo before 12.128.2 contains an authorization bypass vulnerability in webhook management endpoints that allows non-expiring API keys to bypass the requireapikeyexpiration organization policy. The checkWebhookPermission function fails to call apikeyHasOrgRightWithPolicy, enabling attackers with...

CVE-2026-41688 Incomplete fix for CVE-2026-33399: SSRF in Wallos

Wallos is an open-source, self-hostable personal subscription tracker. In versions 4.8.4 and prior, the incomplete SSRF fix in Wallos validates webhook URLs via gethostbyname but passes the original hostname to cURL without CURLOPTRESOLVE pinning on 10 of 11 outbound HTTP endpoints, leaving a DNS...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the provisioning contact points API. An attacker can modify protected webhook URLs without possessing the required permissions by sending crafted requests as a user with the Editor role. Remediation Upgrade...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the provisioning contact points API. An attacker can modify protected webhook URLs without possessing the required permissions by sending crafted requests as a user with the Editor role. Remediation Upgrade...

EUVD-2026-16246

Mattermost Plugins versions =11.4 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to validate incoming request size which allows an authenticated attacker to cause service disruption via the webhook endpoint. Mattermost Advisory ID: MMSA-2026-00589...

Mattermost Plugins 安全漏洞

Mattermost Plugins is a plugin provided by the American company Mattermost, offering powerful feature extensions and tight integration with servers and web/dashboard applications. There are security vulnerabilities in versions prior to 11.4, 11.0.4, 11.1.3, 11.3.2, and 10.11.11.0. These...

WordPress plugin Appmax 输入验证错误漏洞

WordPress and WordPress plugins are both products of the WordPress Foundation. WordPress is a blog platform developed using the PHP language. This platform allows for the creation of personal blog websites on servers based on PHP and MySQL. A WordPress plugin is an application extension. WordPres...

CVE-2026-27023

Twenty is an open source CRM. Prior to version 1.18, the SSRF protection in SecureHttpClientService validated request URLs at the request level but did not validate redirect targets. An authenticated user who could control outbound request URLs e.g., webhook endpoints, image URLs could bypass...

CVE-2026-28478

OpenClaw versions prior to 2026.2.13 contain a denial of service vulnerability in webhook handlers that buffer request bodies without strict byte or time limits. Remote unauthenticated attackers can send oversized JSON payloads or slow uploads to webhook endpoints causing memory pressure and...

CVE-2026-27023

Twenty is an open source CRM. Prior to version 1.18, the SSRF protection in SecureHttpClientService validated request URLs at the request level but did not validate redirect targets. An authenticated user who could control outbound request URLs e.g., webhook endpoints, image URLs could bypass...

BIT-DISCOURSE-2026-26077 Discourse doesn't ensure webhooks require a token

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, several webhook endpoints SendGrid, Mailjet, Mandrill, Postmark, SparkPost in the WebhooksController accepted requests without a valid authentication token when no token was configured. This...

CVE-2026-26077

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, several webhook endpoints SendGrid, Mailjet, Mandrill, Postmark, SparkPost in the WebhooksController accepted requests without a valid authentication token when no token was configured. This...

CVE-2026-26077

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, several webhook endpoints SendGrid, Mailjet, Mandrill, Postmark, SparkPost in the WebhooksController accepted requests without a valid authentication token when no token was configured. This...

CVE-2026-26077 Discourse doesn't ensure webhooks require a token

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, several webhook endpoints SendGrid, Mailjet, Mandrill, Postmark, SparkPost in the WebhooksController accepted requests without a valid authentication token when no token was configured. This...