{"uuid": "51062f17-2996-42bb-8ead-23aa5accc91b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-55040", "type": "seen", "source": "https://infosec.exchange/users/jbhall56/statuses/117082613842688494", "content": "Tracked as CVE-2026-55040, this authentication bypass security flaw in the JWT token validation pipeline can be exploited by attackers without privileges to perform operations as a SharePoint site user or administrator. https://www.bleepingcomputer.com/news/microsoft/hackers-leverage-new-microsoft-sharepoint-exploit-in-attacks/", "creation_timestamp": "2026-08-12T12:48:27.944592Z"}