Microsoft SharePoint Vulnerability

Heloise Meyer | Aug. 13, 2026, 8:50 a.m.

Further information on the SharePoint Vulnerability (CVE-2026-55040)

SharePoint Vulnerability Exploited Shortly After PoC Release [Eduard Kovacs, SecurityWeek]

Attackers Exploit SharePoint Authentication Bypass After Public PoC Release [Ravie Lakshmanan, The Hacker News]

CVE-2026-55040 [CVE, CVE]

Microsoft SharePoint Server Security Feature Bypass Vulnerability [Microsoft, Microsoft]

CVE-2026-55040: Microsoft SharePoint JWT Token Authentication Bypass (FIXED) [Stephen Fewer, Rapid7]