CVE-2026-56215
Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning
- State
- Published
- Severity
- 8.7 High
- Published
- Jun 20, 2026
- Updated
- Jun 24, 2026
- Reserved
- Jun 19, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 8.3 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
CapgoCapgo |
|
References
- GHSA Advisory GHSA-wqc6-fhwf-qpwwvendor-advisory
- VulnCheck Advisory: Capgo - Account Merge via Poisoned public.users.email in SSO Provisioningthird-party-advisory
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