CVE-2026-59563Network attack vectorHinoki check available

Cross-resource deletion via unbound confirmation tokens

Published Sep 28, 2026 · Updated Sep 28, 2026

Confirmation-token replay in Zscaler Integrations MCP Server 0.7.0 through 0.7.1 allows attackers to delete unintended resources. Thirty-one ZPA, ZIA, and ZTW delete handlers pass empty parameters to check_confirmation(), so the HMAC does not bind a token to the target resource identifier. Delete tools must be enabled, and a client or agent must obtain a valid token for another resource of the same type; the resulting deletion uses the server's configured Zscaler API access.

CVSS severityUnavailable
Unscored
EPSS probability0.13%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Confirmation-token replay in Zscaler Integrations MCP Server 0.7.0 through 0.7.1 allows attackers to delete unintended resources. Thirty-one ZPA, ZIA, and ZTW delete handlers pass empty parameters to check_confirmation(), so the HMAC does not bind a token to the target resource identifier. Delete tools must be enabled, and a client or agent must obtain a valid token for another resource of the same type; the resulting deletion uses the server's configured Zscaler API access.

The record

CVE
CVE-2026-59563
Published
Sep 28, 2026
Updated
Sep 28, 2026
Vendor
Zscaler
Product
Zscaler Integrations MCP Server
Classifications
CWE-345, T1485
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.7.0 <0.7.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Zscaler · Zscaler Integrations MCP Serverversion=0.7.0 <0.7.2

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-345Insufficient Verification of Data Authenticity
T1485Data Destruction

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

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