Authorization Bypass in Ryot Leading to Collection Takeover

Executive Summary

CVE-2026-127086 is an authorization bypass flaw in Ryot versions before 10.5.6. It allows any authenticated user to take over another user's collection by exploiting the createOrUpdateCollection GraphQL mutation. The attacker only needs the target collection's ID and can then reassign ownership, read items, modify metadata, and evict the original owner and collaborators.

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Detection Guidance

Check Ryot application version. If it is 10.5.5 or earlier, the system is vulnerable. Look for unauthorized collection ownership changes or metadata modifications in logs.

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Impact Analysis

If you use Ryot versions before 10.5.6, an attacker with your collection ID could take over your collection. They can read your items, change the collection name or description, remove you and collaborators, and even seize all items. This results in loss of control over your data and potential exposure of sensitive information.

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Compliance Impact

This vulnerability could lead to unauthorized access and modification of sensitive data, violating GDPR's data integrity and confidentiality requirements. For HIPAA, it risks exposing protected health information to unauthorized users, potentially breaching security rules and patient privacy.

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Mitigation Strategies

Upgrade Ryot to version 10.5.6 or later immediately. Review collection ownership and access logs for suspicious activity. Ensure no unauthorized changes have occurred.

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