BIT-DISCOURSE-2026-91121 Discourse: Chat upload filenames rendered as raw HTML in excerpts

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, attacker-controlled upload filenames used in chat message excerpts were rendered as unescaped HTML. A user able to upload a file and send chat content could place markup in a filename that was th...

CVE-2026-91121

The Discourse open-source discussion platform is vulnerable to trusted-HTML injection in versions prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0 . The root cause is that attacker-controlled upload filenames used in chat message excerpts are rendered as unescaped HTML . An attacker capable of...

CVE-2026-91121 Discourse: Chat upload filenames rendered as raw HTML in excerpts

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, attacker-controlled upload filenames used in chat message excerpts were rendered as unescaped HTML. A user able to upload a file and send chat content could place markup in a filename that was th...

CVE-2026-91121 Discourse: Chat upload filenames rendered as raw HTML in excerpts

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, attacker-controlled upload filenames used in chat message excerpts were rendered as unescaped HTML. A user able to upload a file and send chat content could place markup in a filename that was th...

CVE-2026-91121 Discourse: Chat upload filenames rendered as raw HTML in excerpts

Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, attacker-controlled upload filenames used in chat message excerpts were rendered as unescaped HTML. A user able to upload a file and send chat content could place markup in a filename that was th...

CVE-2026-67925

A Cross Site Scripting (XSS) vulnerability exists in JeecgBoot v.3.9.2 . A remote attacker can exploit this flaw via the /airag/chat/upload endpoint to execute arbitrary code. While the impact is described as code execution, the vulnerability is categorized as XSS. Specific information regarding ...

CVE-2026-67925: Improper Neutralization of Input During Web Page Generation

Cross Site Scripting vulnerability in JeecgBoot v.3.9.2 allows a remote attacker to execute arbitrary code via the endpoint /airag/chat/upload...

PT-2026-76791

Name of the Vulnerable Software and Affected Versions JeecgBoot version 3.9.2 Description A Cross Site Scripting XSS issue allows a remote attacker to execute arbitrary code through the '/airag/chat/upload' endpoint. Recommendations At the moment, there is no information about a newer version tha...

Open WebUI Vulnerable to Cross-Site Scripting (XSS) via Chat File Upload

A Stored Cross-Site Scripting XSS vulnerability exists in the chat file upload functionality of open-webui/open-webui version 0.3.8. An attacker can inject malicious content into a file, which, when accessed by a victim through a URL or shared chat, executes JavaScript in the victim's browser. Th...

CVE-2023-53971

WebTareas 2.4 contains a file upload vulnerability that allows authenticated users to upload malicious PHP files through the chat photo upload functionality. Attackers can upload a PHP file with arbitrary code to the /files/Messages/ directory and execute it directly through the generated file pa...