SSO identity takeover via mutable profile email
Published Jun 20, 2026 · Updated Jun 20, 2026
Authorization bypass in Capgo before 12.128.12 allows remote authenticated users to attach a victim's SSO identity to their account. The provision-user endpoint searches mutable public.users.email before trusted auth.users.email, letting a poisoned profile select the canonical merge target. Exploitation requires a normal account, a chosen email in an SSO-enabled domain, and a later victim login; the merge grants organization membership and transfers the victim's SSO identity.
Summary
What happened
Authorization bypass in Capgo before 12.128.12 allows remote authenticated users to attach a victim's SSO identity to their account. The provision-user endpoint searches mutable public.users.email before trusted auth.users.email, letting a poisoned profile select the canonical merge target. Exploitation requires a normal account, a chosen email in an SSO-enabled domain, and a later victim login; the merge grants organization membership and transfers the victim's SSO identity.
The record
- CVE
- CVE-2026-56215
- Published
- Jun 20, 2026
- Updated
- Jun 20, 2026
- Vendor
- Capgo
- Product
- Capgo
- Classifications
- CWE-639, T1098
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 20, 2026CVE publishedPublication date reported by the CVE source.
- Jun 20, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <12.128.12
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GHSA-wqc6-fhwf-qpww proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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