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

CVE-2026-59563

HMAC Confirmation Token Unbinding in zscaler-mcp-server PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
Zscaler / zscaler-mcp-server	affected 0.7.0 before 0.7.2

CWE

CWE-305

References

https://github.com/zscaler/zscaler-mcp-server/pull/41

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.