CVE-2026-9708

Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via...

CVE-2026-9708 Incoming webhook user attribution via unvalidated webhook owner

Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via...

CVE-2026-9708

Mattermost vulnerable versions (11.7.x <= 11.7.2, 11.6.x <= 11.6.4, 10.11.x

CVE-2026-9708 Incoming webhook user attribution via unvalidated webhook owner

Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via...

CVE-2026-9708 Incoming webhook user attribution via unvalidated webhook owner

Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via...

CVE-2026-11964

The User Registration & Membership WordPress plugin before 5.2.2 does not verify the authenticity of incoming payment-provider webhook notifications before acting on them, allowing unauthenticated attackers to forge a payment-approved event and activate a paid membership subscription without...

CVE-2026-11964 User Registration & Membership < 5.2.2 - Unauthenticated PayPal Webhook Signature Verification Bypass Leading to Membership Activation

The User Registration & Membership WordPress plugin before 5.2.2 does not verify the authenticity of incoming payment-provider webhook notifications before acting on them, allowing unauthenticated attackers to forge a payment-approved event and activate a paid membership subscription without...

CVE-2026-11964 User Registration & Membership < 5.2.2 - Unauthenticated PayPal Webhook Signature Verification Bypass Leading to Membership Activation

The User Registration & Membership WordPress plugin before 5.2.2 does not verify the authenticity of incoming payment-provider webhook notifications before acting on them, allowing unauthenticated attackers to forge a payment-approved event and activate a paid membership subscription without...

CVE-2026-11964

The User Registration & Membership WordPress plugin (versions prior to 5.2.2 ) is vulnerable to an unauthenticated PayPal Webhook Signature Verification Bypass . The root cause is a failure to verify the authenticity of incoming payment-provider webhook notifications. This allows an unauthenticat...

CVE-2026-9708: Authorization Bypass Through User-Controlled Key

Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via...

PT-2026-59174

Hermes Agent before 0.16.0 creates response store.db and webhook subscriptions.json with world-readable permissions mode 0o644, exposing conversation history and HMAC secrets to local users. Attackers with local filesystem access can read these files directly to obtain sensitive data including...

PT-2026-59542

Summary The /api/v1/runs endpoint accepts an arbitrary webhook url in the request body with no URL validation. When a submitted job completes success or failure, the server makes an HTTP POST request to this URL using httpx.AsyncClient. An unauthenticated attacker can use this to make the server...

PT-2026-59339

As part of our research on improving our AI pentest, we have uncovered the following issue in Open WebUI. We've manually verified and tided up the report, but you can also find the original agent finding at the bottom of this report. Summary The channel webhook create/update flow accepts arbitrar...

PT-2026-57664

Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via...

CVE-2026-11964: Undefined Security Weakness

The User Registration & Membership WordPress plugin before 5.2.2 does not verify the authenticity of incoming payment-provider webhook notifications before acting on them, allowing unauthenticated attackers to forge a payment-approved event and activate a paid membership subscription without...

PT-2026-59082

Summary Bugsink’s webhook URL validation in versions 2.1.2 and earlier could be partially bypassed because of a mismatch in URL parsing. In some malformed URLs, Python’s standard URL parser urllib and the HTTP client stack requests / urllib3 do not agree on which host is actually being targeted...

PT-2026-59590

A vulnerability has been found in PrefectHQ prefect up to 3.6.28.dev1. Affected by this vulnerability is the function validate restricted url of the component Webhook/Notification. The manipulation leads to time-of-check time-of-use. It is possible to initiate the attack remotely. The attack is...

Malicious code in babel-preset-lib-client (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 4274de0136aa69f8b0f4eba03412c7809a1b8c2446bb3ed7f6de1333475aa4c4 index.js, the package main, runs a load-time IIFE that collects OS platform and architecture, hostname, username, private and public IP via...

MAL-2026-10214 Malicious code in babel-preset-lib-client (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 4274de0136aa69f8b0f4eba03412c7809a1b8c2446bb3ed7f6de1333475aa4c4 index.js, the package main, runs a load-time IIFE that collects OS platform and architecture, hostname, username, private and public IP via...

Malicious code in vuln-package (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector a8bd105bf3b12062f312b41f2a1eead5e8481f8d3749fc78bc79ed8675c11394 On npm install, the package's preinstall script triggers a DNS lookup to a unique subdomain of oast.fun fabekzbnjtufpffkzzmvjvi5eafhny3ok.oast.fun, a...