CVE-2026-59563

Name of the Vulnerable Software and Affected Versions Zscaler MCP Server versions 0.7.0 through 0.7.1

Description HMAC confirmation tokens are not bound to the target resource identifier. This allows an MCP client or agent to replay a token generated for one resource to affect another resource of the same type. HMAC (Hash-based Message Authentication Code) is a specific type of message authentication code involving a cryptographic hash function and a secret cryptographic key.

Recommendations Update Zscaler MCP Server to version 0.7.2.