CVE-2026-90788Public exploitNetwork attack vectorHinoki check available

Authenticated command execution via crafted template directive

Published Sep 14, 2026 · Updated Sep 14, 2026

OS command injection in the MacCMS v10 Template Handler 2026.1000.4055 allows remote authenticated users to execute system commands. The administrative template editor accepts a crafted template directive that invokes PHP's system function when the saved custom label page is requested. Administrator access is required to create the template file; successful exploitation runs commands with the web-server process's privileges.

CVSS severityUnavailable
Unscored
EPSS probability1.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

OS command injection in the MacCMS v10 Template Handler 2026.1000.4055 allows remote authenticated users to execute system commands. The administrative template editor accepts a crafted template directive that invokes PHP's system function when the saved custom label page is requested. Administrator access is required to create the template file; successful exploitation runs commands with the web-server process's privileges.

The record

CVE
CVE-2026-90788
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
magicblack
Product
MacCMS v10
Classifications
T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 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?

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  1. Affected versionversion=2026.1000.4055

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

magicblack · MacCMS v10version=2026.1000.4055

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1059Command and Scripting Interpreter

Public exploit references

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

Technologies

Your stack

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Your stack

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