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CVE PROGRAM SOURCE RECORD4.6 Medium

CVE-2026-59563

HMAC Confirmation Token Unbinding in zscaler-mcp-server

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Zscaler zscaler-mcp-server

Default version status: unaffected

  • 0.7.0 to < 0.7.2affected

References