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CVE-2026-33410

🗓️ 19 Mar 2026 21:57:27Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 44 Views🌐 WEB

Discourse fixes two direct message flaws: leakage of hidden group members and chat bypass.

Related
Detection
Affected
Refs
Paths
NVD
Vulners
Node
OR
discoursediscourseRange2026.1.0–2026.1.2
discoursediscourseRange2026.2.0–2026.2.1
discoursediscourseMatch2026.3.0latest
[
  {
    "vendor": "discourse",
    "product": "discourse",
    "versions": [
      {
        "version": ">= 2026.1.0-latest, < 2026.1.2",
        "status": "affected"
      },
      {
        "version": ">= 2026.2.0-latest, < 2026.2.1",
        "status": "affected"
      },
      {
        "version": "= 2026.3.0-latest",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
target_groupsrequest body/chat/direct_messagesIn the chat direct message API, the target_groups parameter is passed to the user resolution query without checking group or member visibility, allowing an authenticated user to leak identities of private/hidden groups.CWE-863
target_groupsrequest body/chat/direct_messagesThe chat-disabled user preference is not checked when creating or querying DM channels, potentially exposing private last_message content from the serialized channel response.CWE-863

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17 Jun 2026 10:37Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.4
EPSS0.00162
SSVC
44