Capgo before 12.128.12 allows authenticated users to modify their mutable public.users.email to arbitrary addresses, which the SSO provisioning endpoint trusts as an account-merge key. Attackers can pre-position their account with a victim's corporate SSO email, causing the provision-user endpoint to merge the victim's SSO identity into the attacker-controlled account.
History

Sat, 20 Jun 2026 00:30:00 +0000

Type Values Removed Values Added
Description Capgo before 12.128.12 allows authenticated users to modify their mutable public.users.email to arbitrary addresses, which the SSO provisioning endpoint trusts as an account-merge key. Attackers can pre-position their account with a victim's corporate SSO email, causing the provision-user endpoint to merge the victim's SSO identity into the attacker-controlled account.
Title Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 8.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-06-20T00:14:38.298Z

Updated: 2026-06-20T00:14:38.298Z

Reserved: 2026-06-19T21:43:24.737Z

Link: CVE-2026-56215

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.