# CVE-2026-62247: Supabase Realtime: Incorrect Authorization

> CVE-2026-62247: Supabase Realtime: Incorrect Authorization. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-62247
Last updated: 2026-09-24T21:25:27Z

- Published: 2026-09-21 19:04 UTC · Updated: 2026-09-24 21:25 UTC · Assigner: GitHub\_M
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS: 0.45%, 39th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-863

## 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.

## Affected vendors and products

- supabase: realtime

## Tracked companies

- [Supabase](https://rewindex.com/company/supabase.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-62247)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-62247)
- [https://github.com/supabase/realtime/commit/c039bca9b57c2e554a67fdf462970b54641d82eb](https://github.com/supabase/realtime/commit/c039bca9b57c2e554a67fdf462970b54641d82eb)
- [https://github.com/supabase/realtime/pull/1969](https://github.com/supabase/realtime/pull/1969)
- [https://github.com/supabase/realtime/releases/tag/v2.111.2](https://github.com/supabase/realtime/releases/tag/v2.111.2)
- [https://github.com/supabase/realtime/security/advisories/GHSA-rcr8-2525-4r7p](https://github.com/supabase/realtime/security/advisories/GHSA-rcr8-2525-4r7p)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-62247 · Markdown: https://rewindex.com/cve/CVE-2026-62247.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-62247 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:17.382Z