CVE-2026-59563

The Zscaler MCP Server versions 0.7.0 and 0.7.1 are vulnerable to a token replay issue. The root cause is that HMAC confirmation tokens are not bound to the target resource identifier. This allows an MCP client or agent to replay a token intended for one resource to impact another resource of the...

CVE-2026-59563 HMAC Confirmation Token Unbinding in zscaler-mcp-server

Zscaler MCP Server versions 0.7.0 and 0.7.1 has an issue where HMAC confirmation tokens were not bound to the target resource identifier, allowing an MCP client or agent to replay a token generated for one resource to affect another resource of the same type. This issue is fixed in version 0.7.2...