Description
Microsoft SharePoint Server contains an unspecified vulnerability that allows an unauthenticated attacker, who has gained access to spoofed JWT authentication tokens, to use them for executing a network attack. This attack bypasses authentication, enabling the attacker to gain administrator privileges.
Recommended action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA remediation due date for U.S. federal agencies: 31 Jan 2024.
Collected automatically from public sources. Verify affected versions and fixes in the vendor's notice before acting.