CVE-2026-4562Public exploitNetwork attack vector

Unauthenticated backend task execution via Timming API

Published Mar 22, 2026 · Updated Mar 22, 2026

Missing authentication in MacCMS Pro 2025.1000.4052 allows remote attackers to execute enabled backend tasks through the Timming API. Base.php explicitly skips its login check for API Timming/index requests, after which the Timming controller dispatches configured administrative task handlers. The API entry point must be reachable and at least one task enabled; no cookie or token is needed, and forced execution can clear caches or trigger configured collection, generation, or URL-push operations.

CVSS severity7.3
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in MacCMS Pro 2025.1000.4052 allows remote attackers to execute enabled backend tasks through the Timming API. Base.php explicitly skips its login check for API Timming/index requests, after which the Timming controller dispatches configured administrative task handlers. The API entry point must be reachable and at least one task enabled; no cookie or token is needed, and forced execution can clear caches or trigger configured collection, generation, or URL-push operations.

The record

CVE
CVE-2026-4562
Published
Mar 22, 2026
Updated
Mar 22, 2026
Vendor
MacCMS Pro
Product
MacCMS Pro
Classifications
CWE-287, CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 22, 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=2025.1000.4052

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MacCMS Pro · MacCMS Proversion=2025.1000.4052

Published CVSS scores

7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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.

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

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

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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