CVE-2026-62247: Supabase Realtime: Incorrect Authorization
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.
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N · CWE-863
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
supabase: realtime
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/supabase/realtime/commit/c039bca9b57c2e554a67fdf462970b54641d82eb (opens in new tab)
- github.com/supabase/realtime/pull/1969 (opens in new tab)
- github.com/supabase/realtime/releases/tag/v2.111.2 (opens in new tab)
- github.com/supabase/realtime/security/advisories/GHSA-rcr8-2525-4r7p (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)