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.
Published: 2026-09-28
Score: 4.6 Medium
EPSS: n/a
KEV: No
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Remediation

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Tracking

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History

Mon, 28 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 28 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
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.
Title HMAC Confirmation Token Unbinding in zscaler-mcp-server
Weaknesses CWE-305
References
Metrics cvssV3_1

{'score': 4.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: Zscaler

Published:

Updated: 2026-09-28T13:31:27.587Z

Reserved: 2026-07-06T06:18:59.633Z

Link: CVE-2026-59563

cve-icon Vulnrichment

Updated: 2026-09-28T13:23:59.335Z

cve-icon NVD

Status : Received

Published: 2026-09-28T13:17:22.160

Modified: 2026-09-28T14:17:16.277

Link: CVE-2026-59563

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-305

    Authentication Bypass by Primary Weakness