CVE-2026-62247
mediumSupabase Realtime provides Broadcast, Presence, and Postgres Changes via WebSockets.
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/supabase/realtime/commit/c039bca9b57c2e554a67fdf462970b54641d82eb security-advisories@github.com
- https://github.com/supabase/realtime/pull/1969 security-advisories@github.com
- https://github.com/supabase/realtime/releases/tag/v2.111.2 security-advisories@github.com
- https://github.com/supabase/realtime/security/advisories/GHSA-rcr8-2525-4r7p security-advisories@github.com