Medium 6.5Published Sep 21, 2026

CVE-2026-62247Supabase Realtime: Incorrect Authorization

Updated under an hour ago (2026-10-19 06:25 UTC)

Does this affect you?

It affects supabase realtime. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for supabase realtime

Exploited in the last 30 days

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: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Sep 22, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

supabase realtime supabase:realtime (from the name)	before 2.111.2	CNA record

References

https://github.com/supabase/realtime/security/advisories/GHSA-rcr8-2525-4r7px-refsource-confirm
https://github.com/supabase/realtime/pull/1969x-refsource-misc
https://github.com/supabase/realtime/commit/c039bca9b57c2e554a67fdf462970b54641d82ebx-refsource-misc
https://github.com/supabase/realtime/releases/tag/v2.111.2x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.