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CVE-2026-72722 Discourse: Duplicate lookup reveals restricted topic titles through canonicalized URLs

🗓️ 10 Aug 2026 15:54:35Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 8 Views

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, TopicLink.extract_from, TopicLink.ensure_entry_for, and TopicLink.duplicate_lookup do not consistently enforce Guardian.can_see? checks when proc...

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-72722
10 Aug 202615:54
attackerkb
cve
CVE
CVE-2026-72722
10 Aug 202615:54
cve
euvd
EUVD
EUVD-2026-55659
10 Aug 202615:54
euvd
nvd
NVD
CVE-2026-72722
10 Aug 202616:19
nvd
[
  {
    "vendor": "discourse",
    "product": "discourse",
    "versions": [
      {
        "version": "< 2026.1.6",
        "status": "affected"
      },
      {
        "version": ">= 2026.5.0-latest, < 2026.5.2",
        "status": "affected"
      },
      {
        "version": ">= 2026.6.0-latest, < 2026.6.1",
        "status": "affected"
      },
      {
        "version": ">= 2026.7.0-latest, < 2026.7.0",
        "status": "affected"
      }
    ]
  }
]

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10 Aug 2026 15:54Current
CVSS 3.14.3
8