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CVE-2026-91156 Discourse: Chat MessageBus delivers read-restricted messages to unauthorized users

🗓️ 14 Oct 2026 15:33:33Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 13 Views

Authenticated users can view read-restricted chat messages via Discourse MessageBus.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-91156
14 Oct 202620:48
–circl
cve
CVE
CVE-2026-91156
14 Oct 202615:33
–cve
euvd
EUVD
EUVD-2026-101300
14 Oct 202615:33
–euvd
nvd
NVD
CVE-2026-91156
14 Oct 202616:17
–nvd
ptsecurity
Positive Technologies
PT-2026-114330
14 Oct 202600:00
–ptsecurity
[
  {
    "vendor": "discourse",
    "product": "discourse",
    "versions": [
      {
        "version": "< 2026.1.9",
        "status": "affected"
      },
      {
        "version": ">= 2026.7.0-latest, < 2026.7.3",
        "status": "affected"
      },
      {
        "version": ">= 2026.8.0-latest, < 2026.8.1",
        "status": "affected"
      },
      {
        "version": ">= 2026.9.0-latest, < 2026.9.0",
        "status": "affected"
      }
    ]
  }
]

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