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CVE-2026-91122 Discourse: Chat MessageBus delivers read-restricted messages to unauthorized users

🗓️ 24 Sep 2026 16:56:26Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Authenticated users can execute arbitrary JavaScript in Discourse via video placeholder breakout.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-91122
24 Sep 202618:46
–circl
cve
CVE
CVE-2026-91122
24 Sep 202616:56
–cve
euvd
EUVD
EUVD-2026-86302
24 Sep 202616:56
–euvd
nvd
NVD
CVE-2026-91122
24 Sep 202617:17
–nvd
vulnrichment
Vulnrichment
CVE-2026-91122 Discourse: Chat MessageBus delivers read-restricted messages to unauthorized users
24 Sep 202616:56
–vulnrichment
[
  {
    "vendor": "discourse",
    "product": "discourse",
    "versions": [
      {
        "version": "< 2026.8.0",
        "status": "affected"
      },
      {
        "version": ">= 2026.7.0-latest, < 2026.7.2",
        "status": "affected"
      },
      {
        "version": ">= 2026.6.0-latest, < 2026.6.3",
        "status": "affected"
      },
      {
        "version": ">= 2026.1.0-latest, < 2026.1.8",
        "status": "affected"
      }
    ]
  }
]

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