Unauthenticated account creation via deferred CAPTCHA validation
Published Jul 10, 2026 · Updated Jul 10, 2026
Improper authentication in Capgo before 12.128.2 allows remote attackers to create accounts through the accept_invitation endpoint. The handler calls supabaseAdmin.auth.admin.createUser() before CAPTCHA enforcement occurs during the later signInWithPassword call. A valid magic invitation string is required; exploitation creates unwanted accounts and consumes invite links without granting a session.
Summary
What happened
Improper authentication in Capgo before 12.128.2 allows remote attackers to create accounts through the accept_invitation endpoint. The handler calls supabaseAdmin.auth.admin.createUser() before CAPTCHA enforcement occurs during the later signInWithPassword call. A valid magic invitation string is required; exploitation creates unwanted accounts and consumes invite links without granting a session.
The record
- CVE
- CVE-2026-56312
- Published
- Jul 10, 2026
- Updated
- Jul 10, 2026
- Vendor
- Capgo
- Product
- Capgo
- Classifications
- CWE-287
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 10, 2026CVE publishedPublication date reported by the CVE source.
- Jul 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <12.128.2
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
- Invitation CAPTCHA bypass proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo