CVE-2026-62224 in MS Teams
Summary
by MITRE • 07/17/2026
OpenClaw MS Teams before 2026.5.12 contain an authorization bypass vulnerability where the allowFrom feature binds to mutable display names. Attackers with lower-trust access can perform actions requiring stronger authorization by exploiting the mutable display name binding in the affected feature.
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Analysis
by VulDB Data Team • 07/17/2026
The OpenClaw MS Teams vulnerability represents a critical authorization bypass flaw that undermines the security model of the platform through improper handling of user identity attributes. This issue affects versions prior to 2026.5.12 and specifically targets the allowFrom feature which incorrectly relies on mutable display names for access control decisions. The vulnerability stems from a fundamental design flaw where the system permits attackers to manipulate their display name to gain elevated privileges, creating a dangerous precedent where trust relationships can be easily subverted through simple identity spoofing techniques.
The technical implementation of this vulnerability demonstrates a clear failure in authentication and authorization controls, aligning with CWE-287 which addresses improper authentication issues. The allowFrom feature should enforce strict identity verification mechanisms using immutable attributes such as user principal names or security identifiers rather than relying on display names that can be modified by users with appropriate privileges. This mutable attribute binding creates an attack surface where malicious actors can exploit the system's trust model through simple name changes, effectively bypassing intended access controls and potentially escalating their privileges to perform actions that should require higher authorization levels.
The operational impact of this vulnerability extends beyond simple privilege escalation, creating potential for broader security compromise within Microsoft Teams environments. Attackers who successfully exploit this flaw could gain unauthorized access to sensitive communications, document sharing capabilities, and administrative functions that are normally restricted to authorized users only. This type of authorization bypass vulnerability also enables potential lateral movement within the organization's communication infrastructure, as attackers could use elevated privileges to access additional resources or perform actions that compromise the integrity and confidentiality of team-based collaborations.
Organizations using affected versions of OpenClaw MS Teams should immediately implement mitigations including patching to version 2026.5.12 or later, which addresses the core issue by enforcing immutable identity attributes for authorization decisions. Additional defensive measures include implementing strict access control policies that do not rely on mutable user attributes, conducting thorough security audits of existing allowFrom configurations, and monitoring for unauthorized display name modifications that might indicate exploitation attempts. This vulnerability also highlights the importance of following ATT&CK framework principles related to privilege escalation and defense evasion techniques, as attackers can leverage such flaws to maintain persistent access while avoiding detection through legitimate-looking identity changes.