CVE-2026-56215 Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning
Attackers can hijack victim accounts by manipulating email fields to trigger unauthorized SSO identity merging.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-56215?
CVE-2026-56215 is a high-severity vulnerability in Capgo, published on 20 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-56215?
How do I fix CVE-2026-56215?
No fix has been published for CVE-2026-56215 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-56215 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-56215 exists.
Sources
Also known as GHSA-c8g9-cm5m-77px, GHSA-wqc6-fhwf-qpww.