Description
Supabase Realtime provides Broadcast, Presence, and Postgres Changes via WebSockets. Prior to 2.111.2, Realtime authorization does not correctly honor the per-extension presence.read row-level security policy when a private-channel client is allowed presence.write but explicitly denied presence.read. Under that differential policy, the client can receive presence_diff messages containing other members' presence metadata, including application-defined location, online-status, roster, viewing, or typing information. Deployments with uniform presence visibility have no differential, and postgres_changes row data is unaffected. This issue is fixed in version 2.111.2.
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Remediation
No vendor fix or workaround currently provided.
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References
History
Mon, 21 Sep 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Supabase Realtime provides Broadcast, Presence, and Postgres Changes via WebSockets. Prior to 2.111.2, Realtime authorization does not correctly honor the per-extension presence.read row-level security policy when a private-channel client is allowed presence.write but explicitly denied presence.read. Under that differential policy, the client can receive presence_diff messages containing other members' presence metadata, including application-defined location, online-status, roster, viewing, or typing information. Deployments with uniform presence visibility have no differential, and postgres_changes row data is unaffected. This issue is fixed in version 2.111.2. | |
| Title | Supabase Realtime: Incorrect Authorization | |
| Weaknesses | CWE-863 | |
| References |
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| Metrics |
cvssV3_1
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Subscriptions
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-21T19:04:58.743Z
Reserved: 2026-07-13T17:09:57.573Z
Link: CVE-2026-62247
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OpenCVE Enrichment
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Weaknesses
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CWE-863
Incorrect Authorization