CVE-2026-103245

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 fail to verify the x-webflow-signature HMAC in the Webflow Trigger node webhook handler. Unauthenticated attackers can send forged webhook requests with attacker-controlled payloads to trigger workflows and...

PT-2026-95797

Name of the Vulnerable Software and Affected Versions Payment Gateway of Stripe for WooCommerce versions prior to 5.0.9 Description Improper Verification of Cryptographic Signature occurs due to the woocommerce api wt stripe webhook endpoint EH Stripe Webhook Handler::handle failing to execute th...

EUVD-2026-77599

PraisonAI is a multi-agent teams system. Prior to 4.6.59, the WhatsApp and Linear bot webhook handlers verify HMAC signatures only when WHATSAPPAPPSECRET or LINEARWEBHOOKSECRET is configured and otherwise parse and dispatch unsigned request bodies. A remote unauthenticated client that reaches the...

CVE-2026-73315: Server-Side Request Forgery (SSRF)

XenForo before 2.3.13 contains a server-side request forgery vulnerability in the PayPal REST webhook handler that allows unauthenticated attackers to cause the server to make outbound HTTP requests to arbitrary destinations by supplying a crafted certificate URL in webhook headers without scheme...

CVE-2026-73314: Improper Check for Unusual or Exceptional Conditions

XenForo before 2.3.13 contains a signature verification logic error in the PayPal REST webhook handler that allows unauthenticated attackers to bypass payment signature validation by submitting a webhook request with an unsupported authalgo header value. When the algorithm cannot be mapped to a...

CVE-2026-86486

In JetBrains YouTrack before 2026.2.18634 the generic VCS webhook handler failed open when its secret was blank...

CVE-2026-86486: Missing Authentication for Critical Function

In JetBrains YouTrack before 2026.2.18634 the generic VCS webhook handler failed open when its secret was blank...

CVE-2026-64868

New API (github.com/QuantumNous/new-api) versions before v1.0.0-rc.11 read and log full request bodies on unauthenticated payment webhook endpoints (Stripe, Creem, Waffo) before signature validation. An unauthenticated remote attacker can send oversized payloads to cause memory pressure, containe...

CVE-2026-64868 New API: Unauthenticated payment webhooks allow memory and disk DoS via unbounded body reads and full-body logging

New API is a large language mode LLM gateway and artificial intelligence AI asset management system. Prior to 1.0.0-rc.11, POST /api/stripe/webhook, POST /api/creem/webhook, and POST /api/waffo/webhook read and log full request bodies before signature validation in router/api-router.go and the...

CVE-2026-74244

A flaw was found in Red Hat Quay's Stripe billing webhook handler. This vulnerability allows an unauthenticated attacker to forge billing events by sending crafted JSON requests to the /webhooks/stripe endpoint without validating the Stripe-Signature header. Successful exploitation can lead to th...

CVE-2026-74244: Improper Verification of Cryptographic Signature

A flaw was found in Red Hat Quay's Stripe billing webhook handler. This vulnerability allows an unauthenticated attacker to forge billing events by sending crafted JSON requests to the /webhooks/stripe endpoint without validating the Stripe-Signature header. Successful exploitation can lead to th...

PT-2026-71923

Name of the Vulnerable Software and Affected Versions OpenChoreo versions prior to 1.0.3 OpenChoreo versions prior to 1.1.3 OpenChoreo versions prior to 1.2.0-rc.2 Description The 'POST /api/v1alpha1/autobuild' endpoint in 'internal/openchoreo-api/api/handlers/webhook handler.go' allows...

CVE-2026-48494: Authorization Bypass Through User-Controlled Key

TypeBot is a chatbot builder tool. In version 3.16.1, an authenticated user who has read access to any typebot can resume a WhatsApp preview webhook session that belongs to a different typebot by mixing an authorized typebotId and blockId and a foreign preview phone number tied to another preview...

PYSEC-2026-3626 aiosend: Deserialization of request body before signature verification (Pre-auth DoS) in webhook handler

Summary WebhookHandler.feedupdate deserializes the entire request body before verifying the HMAC signature. This allows an unauthenticated attacker to force expensive parsing of arbitrary JSON payloads that will ultimately be rejected, leading to unnecessary CPU and memory consumption. Severity...

PT-2026-45821

Name of the Vulnerable Software and Affected Versions GoClaw versions prior to 3.11.4 Description An issue in the Webhook Verification Handler component allows for missing authentication. This occurs within the resolveAuth function located in the internal/http/auth.go file, enabling remote...

CVE-2026-10224

Technical details about CVE-2026-10224 are not publicly available in the provided documents. Monitor for updates.

CVE-2026-41432: Insufficient Verification of Data Authenticity

New API is a large language mode LLM gateway and artificial intelligence AI asset management system. Prior to version 0.12.10, a vulnerability exists in the Stripe webhook handler that allows an unauthenticated attacker to forge webhook events and credit arbitrary quota to their account without...

CVE-2026-42231

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, a flaw in the xml2js library used to parse XML request bodies in n8n's webhook handler allowed prototype pollution via a crafted XML payload. An authenticated user with permission to create or modi...

CVE-2026-42231: Improperly Controlled Modification of Object Prototype Attributes

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, a flaw in the xml2js library used to parse XML request bodies in n8n's webhook handler allowed prototype pollution via a crafted XML payload. An authenticated user with permission to create or modi...

GHSA-Q5F4-99JV-PGG5 n8n has Prototype Pollution in XML Webhook Body Parser that Leads to RCE

Impact A flaw in the xml2js library used to parse XML request bodies in n8n's webhook handler allowed prototype pollution via a crafted XML payload. An authenticated user with permission to create or modify workflows could exploit this to pollute the JavaScript object prototype and, by chaining t...