CVE-2026-55880 in OpenReplay
Summary
by MITRE • 07/10/2026
OpenReplay is a self-hosted session replay suite. In 1.27.0 and earlier, three dashboard and note mutation functions ran their SQL without the ownership predicate that their sibling read and edit functions use: notes.delete filtered only on note id and project id, while dashboards.update_widget and dashboards.remove_widget filtered only on dashboard id and widget id, allowing any authenticated member to delete another user's private session notes and remove or rewrite widgets on another user's private dashboards.
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Analysis
by VulDB Data Team • 07/10/2026
This vulnerability represents a critical authorization flaw in OpenReplay's session replay suite affecting versions 1.27.0 and earlier. The issue stems from inconsistent access control implementation where three specific dashboard and note mutation functions lack proper ownership validation mechanisms that are present in their corresponding read and edit operations. The technical flaw manifests through three distinct pathways: notes.delete function which only validates note id and project id without confirming user ownership, and dashboards.update_widget and dashboards.remove_widget functions that validate only dashboard id and widget id without enforcing user authorization checks.
The operational impact of this vulnerability is severe as it enables authenticated users to perform unauthorized actions against resources they do not own. An attacker or malicious user can exploit this weakness to delete private session notes belonging to other users, effectively compromising the confidentiality and integrity of sensitive data. Additionally, the ability to remove or rewrite widgets on private dashboards allows for manipulation of dashboard content, potentially leading to information disclosure, data corruption, or disruption of legitimate user workflows. This vulnerability directly violates the principle of least privilege and demonstrates a clear breakdown in the application's access control model.
This security flaw aligns with CWE-284 (Improper Access Control) and specifically manifests as an authorization bypass where mutation operations lack proper validation compared to their read counterparts. The issue follows ATT&CK technique T1078.004 (Valid Accounts: Cloud Accounts) by exploiting legitimate authenticated user accounts to perform unauthorized actions. The inconsistency between read and write operation access controls creates a privilege escalation vector that could be leveraged for more extensive malicious activities. Organizations relying on OpenReplay for session replay analysis face significant risks including potential data breaches, privacy violations, and operational disruptions when this vulnerability is exploited.
The recommended mitigations include implementing proper ownership predicates in all mutation functions to ensure they validate user authorization before executing database operations. The fix should mirror the access control patterns used by existing read and edit functions, requiring validation of user ownership for all note deletion and dashboard widget modification operations. Additionally, comprehensive access control reviews should be conducted to identify similar inconsistencies across other application functions. Regular security testing including penetration testing and code reviews should be implemented to prevent such authorization bypass vulnerabilities from occurring in future releases. The implementation should also consider adding audit logging for all mutation operations to detect unauthorized access attempts.