EUVD-2026-28384

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...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature due to the lack of exposure of the HMAC-SHA256 signing key in the SDK's typed API, which prevents verification of the X-AxonFlow-Signature header on incoming webhook deliveries. An attack...

BIT-KYVERNO-2026-41323 Kyverno: ServiceAccount token leaked to external servers via apiCall service URL

Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.18.0, 1.17.2, and 1.16.4, Kyverno's apiCall feature in ClusterPolicy automatically attaches the admission controller's ServiceAccount token to outgoing HTTP requests. The service URL has no...

CVE-2026-7113 NousResearch hermes-agent Webhooks Endpoint webhook.py missing authentication

A vulnerability was found in NousResearch hermes-agent 0.8.0. Affected by this issue is some unknown functionality of the file gateway/platforms/webhook.py of the component Webhooks Endpoint. The manipulation of the argument INSECURENOAUTH results in missing authentication. The attack can be...

CVE-2026-25883

Vexa is an open-source, self-hostable meeting bot API and meeting transcription API. Prior to 0.10.0-260419-1910, the Vexa webhook feature allows authenticated users to configure an arbitrary URL that receives HTTP POST requests when meetings complete. The application performs no validation on th...

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Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the authentication for Google OIDC tokens in the GCR Receiver webhook endpoint. An attacker can trigger unauthorized reconciliation of resources by presenting any valid Google-issued...

CVE-2026-34590

Postiz is an AI social media scheduling tool. Prior to version 2.21.4, the POST /webhooks/ endpoint for creating webhooks uses WebhooksDto which validates the url field with only @IsUrl format check, missing the @IsSafeWebhookUrl validator that blocks internal/private network addresses. The updat...

OpenClaw: Voice-call Plivo V3 webhook replay key uses unsorted URL, allowing replay via query-parameter reordering

Summary Plivo V3 signature verification canonicalized query ordering, but replay detection hashed the raw verification URL. Reordering query parameters preserved a valid signature while producing a fresh replay-cache key. Impact An attacker who captured one valid signed Plivo V3 webhook could...

Replay Attack

Overview @openclaw/voice-call is an OpenClaw voice-call plugin Affected versions of this package are vulnerable to Replay Attack in the webhook-security.ts process. An attacker can bypass replay protection by capturing a valid signed webhook and resending it with reordered query parameters, there...

Replay Attack

Overview openclaw is a 🦞 OpenClaw — Personal AI Assistant Affected versions of this package are vulnerable to Replay Attack in the webhook-security.ts process. An attacker can bypass replay protection by capturing a valid signed webhook and resending it with reordered query parameters, thereby...

Replay Attack

Overview @openclaw/voice-call is an OpenClaw voice-call plugin Affected versions of this package are vulnerable to Replay Attack due to improper derivation of the replay key in the webhook-security.ts process. An attacker can bypass replay protection and submit multiple authenticated requests by...

GHSA-CG6C-Q2HX-69H7 OpenClaw: Plivo V2 verified replay identity drifts on query-only variants

Summary Before v2026.3.23, the Plivo V2 verification path treated query-only variants of the same signed request as fresh verified work. Plivo V2 signatures authenticate baseUrl + nonce, but the replay key was derived from the full verification URL including the query string, so unsigned query-on...

OpenClaw: Plivo V2 verified replay identity drifts on query-only variants

Summary Before v2026.3.23, the Plivo V2 verification path treated query-only variants of the same signed request as fresh verified work. Plivo V2 signatures authenticate baseUrl + nonce, but the replay key was derived from the full verification URL including the query string, so unsigned query-on...

GHSA-G5PH-F57V-MWJC OneUptime WhatsApp Webhook Missing Signature Verification

Summary The WhatsApp POST webhook handler /notification/whatsapp/webhook processes incoming status update events without verifying the Meta/WhatsApp X-Hub-Signature-256 HMAC signature, allowing any unauthenticated attacker to send forged webhook payloads that manipulate notification delivery stat...

OpenClaw: Feishu webhook mode accepted forged events when only `verificationToken` was configured

Summary Feishu webhook mode allowed deployments that configured only verificationToken without encryptKey. In that state, forged inbound events could be accepted because the weaker configuration did not provide the required cryptographic verification boundary. Impact An unauthenticated network...

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-2026-24736

Squidex is an open source headless content management system and content management hub. Versions of the application up to and including 7.21.0 allow users to define "Webhooks" as actions within the Rules engine. The url parameter in the webhook configuration does not appear to validate or restri...

CVE-2026-24736

Squidex is an open source headless content management system and content management hub. Versions of the application up to and including 7.21.0 allow users to define "Webhooks" as actions within the Rules engine. The url parameter in the webhook configuration does not appear to validate or restri...

PT-2026-2559

n8n is an open source workflow automation platform. From 1.36.0 to before 2.2.0, the Webhook node’s IP whitelist validation performed partial string matching instead of exact IP comparison. As a result, an incoming request could be accepted if the source IP address merely contained the configured...