CVE-2026-88864 Capgo - Broken Access Control

Capgo contains a broken access control vulnerability caused by unrestricted write access to the public.sso_providers table via Supabase PostgREST, letting attackers with a full API key bypass SSO provisioning controls and enforce arbitrary SSO, exploit requires possession of a full API key.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.37% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L
Published
10 September 2026
Updated
15 October 2026
Weakness
CWE-284

Vendor fix

Restrict direct write access to the public.sso_providers table and implement proper SSO provisioning controls; update to the latest fixed version when available.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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