Cap-go Capgo up to 12.261.0 SSO Provider Configuration enforce_sso_provider_client_update_guard provider_id privileges management

Summaryinfo

A vulnerability described as problematic has been identified in Cap-go Capgo up to 12.261.0. Affected is the function enforce_sso_provider_client_update_guard of the file 20260826100000_sso_providers_block_direct_active_insert.sql of the component SSO Provider Configuration. Such manipulation of the argument provider_id leads to privileges management. This vulnerability is listed as CVE-2026-100612. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Cap-go Capgo up to 12.261.0. Affected by this issue is the function enforce_sso_provider_client_update_guard of the file 20260826100000_sso_providers_block_direct_active_insert.sql of the component SSO Provider Configuration. The manipulation of the argument provider_id with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Capgo (capgo.app) through version 12.261.0 contains an incomplete access-control fix for the public.sso_providers table. Migration 20260826100000_sso_providers_block_direct_active_insert.sql installs a BEFORE UPDATE guard (enforce_sso_provider_client_update_guard()) that freezes only the dns_verified_at, domain, status and enforce_sso columns; provider_id (as well as metadata_url and attribute_mapping) is left writable. Because the table is granted ALL to the anon and authenticated roles with no column-level restriction, and PostgreSQL row-level security policies such as allow_org_admins_update_sso_providers constrain only which row may be updated and not which columns, a user holding the org_admin tier permission org.update_settings can PATCH provider_id over PostgREST to an identity provider under their control. Since provider_id is the trust anchor binding an email domain to an authorized IdP, the attacker can then authenticate through their own IdP while asserting the org owner's email; the server-side provider match succeeds and the merge routine attaches the attacker's SSO identity to the existing owner account, nulls its password, and deletes its other identities and sessions. This results in vertical privilege escalation from org_admin to org owner/super_admin, account takeover, and lockout of the legitimate owner. Exploitation requires that the target organization has an active SSO provider configured and that the attacker already holds org_admin in that organization. No patched version is available.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-100612 since 09/26/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are necessary for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/26/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

By approaching the search of inurl:20260826100000_sso_providers_block_direct_active_insert.sql it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Cap-go

Name

• Capgo

Version

• 12.261

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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