CVE-2026-34509

OpenClaw CVE-2026-34509 affects the Microsoft Teams plugin prior to version 2026.3.8. The vulnerability is a sender allowlist bypass: if a team/channel route allowlist uses an empty groupAllowFrom parameter, the message handler synthesizes wildcard sender authorization, allowing any sender within...

OpenClaw's MS Teams sender allowlist bypass when route allowlist is configured and sender allowlist is empty

OpenClaw's Microsoft Teams plugin widened group sender authorization when a team/channel route allowlist was configured but groupAllowFrom was empty. Before the fix, a matching route allowlist entry could cause the message handler to synthesize wildcard sender authorization for that route, allowi...