Mattermost allows attackers to spoof permalink embeds

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to sanitize client-supplied post metadata which allows an authenticated attacker to spoof permalink embeds impersonating other users via crafted PUT requests to the post update API endpoint. Mattermost Advisory ID:...

Origin Validation Error

Overview github.com/mattermost/mattermost/server/channels/app is a private-cloud Slack alternative Affected versions of this package are vulnerable to Origin Validation Error via the post update API endpoint when client-supplied post metadata is not properly sanitized. An attacker can impersonate...

CVE-2026-2457

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to sanitize client-supplied post metadata which allows an authenticated attacker to spoof permalink embeds impersonating other users via crafted PUT requests to the post update API endpoint.. Mattermost Advisory ID:...

CVE-2026-2457

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to sanitize client-supplied post metadata which allows an authenticated attacker to spoof permalink embeds impersonating other users via crafted PUT requests to the post update API endpoint.. Mattermost Advisory ID:...

CVE-2026-2457 WebSocket Message Spoofing via Permalink Embed Manipulation

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to sanitize client-supplied post metadata which allows an authenticated attacker to spoof permalink embeds impersonating other users via crafted PUT requests to the post update API endpoint.. Mattermost Advisory ID:...

CVE-2026-2457 WebSocket Message Spoofing via Permalink Embed Manipulation

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to sanitize client-supplied post metadata which allows an authenticated attacker to spoof permalink embeds impersonating other users via crafted PUT requests to the post update API endpoint.. Mattermost Advisory ID:...

CVE-2026-2457 WebSocket Message Spoofing via Permalink Embed Manipulation

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to sanitize client-supplied post metadata which allows an authenticated attacker to spoof permalink embeds impersonating other users via crafted PUT requests to the post update API endpoint.. Mattermost Advisory ID:...

CVE-2026-2457

CVE-2026-2457 affects Mattermost versions: 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, and 10.11.x

CVE-2026-32717

AnythingLLM prior to 1.11.2 in multi-user mode suffers an access control bypass where suspended users remain authenticated via browser extension API keys. If a user already has a valid brx-... browser extension API key, it continues to work after suspension, allowing access to browser extension e...

CVE-2026-32717

AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. In 1.11.1 and earlier, in multi-user mode, AnythingLLM blocks suspended users on the normal JWT-backed session path, but it does not block them on the browser extension API...

PT-2026-25397

AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. In 1.11.1 and earlier, in multi-user mode, AnythingLLM blocks suspended users on the normal JWT-backed session path, but it does not block them on the browser extension API...

CVE-2026-31876

Notesnook is a note-taking app focused on user privacy & ease of use. Prior to 3.3.9, a Stored Cross-Site Scripting XSS vulnerability existed in Notesnook's editor embed component when rendering Twitter/X embed URLs. The tweetToEmbed function in component.tsx interpolated the user-supplied URL...

CVE-2026-31876

Notesnook is a note-taking app focused on user privacy & ease of use. Prior to 3.3.9, a Stored Cross-Site Scripting XSS vulnerability existed in Notesnook's editor embed component when rendering Twitter/X embed URLs. The tweetToEmbed function in component.tsx interpolated the user-supplied URL...

CVE-2026-31876 Notesnook has Stored XSS via unsanitized Twitter/X embed URL in editor (`tweetToEmbed`)

Notesnook is a note-taking app focused on user privacy & ease of use. Prior to 3.3.9, a Stored Cross-Site Scripting XSS vulnerability existed in Notesnook's editor embed component when rendering Twitter/X embed URLs. The tweetToEmbed function in component.tsx interpolated the user-supplied URL...

EUVD-2026-11286

Notesnook is a note-taking app focused on user privacy & ease of use. Prior to 3.3.9, a Stored Cross-Site Scripting XSS vulnerability existed in Notesnook's editor embed component when rendering Twitter/X embed URLs. The tweetToEmbed function in component.tsx interpolated the user-supplied URL...

CVE-2026-31876

Notesnook before version 3.3.9 was vulnerable to a Stored XSS in the editor embed component when rendering Twitter/X embed URLs. The tweetToEmbed() function in component.tsx interpolated the user-supplied URL directly into an HTML string assigned to the srcdoc attribute of an iframe, enabling scr...

CVE-2026-26193

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.44, aanually modifying chat history allows setting the embeds property on a response message, the content of which is loaded into an iFrame with a sandbox that has allow-scripts...

CVE-2026-26193

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.44, aanually modifying chat history allows setting the embeds property on a response message, the content of which is loaded into an iFrame with a sandbox that has allow-scripts...

CVE-2026-26193 Open WebUI vulnerable to Stored XSS via iFrame embeds in response messages

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.44, aanually modifying chat history allows setting the embeds property on a response message, the content of which is loaded into an iFrame with a sandbox that has allow-scripts...

CVE-2026-26193 Open WebUI vulnerable to Stored XSS via iFrame embeds in response messages

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.44, aanually modifying chat history allows setting the embeds property on a response message, the content of which is loaded into an iFrame with a sandbox that has allow-scripts...