CVE-2026-56339
Unauthenticated org enumeration via Supabase PostgREST rescind_invitation RPC.
Is CVE-2026-56339 being exploited?
Not confirmed. CVE-2026-56339 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.46% probability of exploitation in the next 30 days.
How severe is CVE-2026-56339?
CVE-2026-56339 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-56339?
Yes. A fix has been recorded for CVE-2026-56339. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-56339 affect?
CVE-2026-56339 affects Capgo < 12.128.2, Supabase PostgREST public.rescind_invitation RPC, Apps using Capgo/Supabase publishable API keys. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-56339?
Upgrade to >=12.128.2; rotate publishable API keys; audit logs; reduce error detail.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attackers can enumerate valid organization IDs via distinct error messages, enabling targeted phishing, reconnaissance, and increased attack surface.
Patch when possible
- affected< 12.128.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.