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

🗓️ 24 Sep 2026 17:05:20Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 1 Views

Trusted-HTML injection in Discourse prior to 2026.1.8, 2026.6.3, 2026.7.2, and 2026.8.0.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-91121
24 Sep 202617:05
–cve
euvd
EUVD
EUVD-2026-86306
24 Sep 202617:05
–euvd
nvd
NVD
CVE-2026-91121
24 Sep 202618:19
–nvd
[
  {
    "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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