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Thu, 24 Sep 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Discourse
Discourse discourse |
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| Vendors & Products |
Discourse
Discourse discourse |
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| Metrics |
ssvc
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Thu, 24 Sep 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Discourse is an open-source discussion platform. Prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0, the video placeholder component allowed crafted HTML to cause an attribute breakout and inject an attacker-controlled event handler. An authenticated user with default trust-level posting privileges could store the crafted placeholder in a post. When another user opened the post and clicked the video play overlay, the handler could execute arbitrary JavaScript in the viewer's session. Default Content Security Policy settings block inline event handlers, but instances with CSP disabled or relaxed could allow the script to read page content and make authenticated requests as the viewer. This issue is fixed in versions 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0. | |
| Title | Discourse: Chat MessageBus delivers read-restricted messages to unauthorized users | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-24T17:25:54.573Z
Reserved: 2026-09-14T19:36:48.843Z
Link: CVE-2026-91122
Updated: 2026-09-24T17:25:45.637Z
Status : Deferred
Published: 2026-09-24T17:17:08.393
Modified: 2026-09-24T18:19:06.763
Link: CVE-2026-91122
No data.
OpenCVE Enrichment
Updated: 2026-09-24T19:15:15Z
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CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')