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MacCMS10 CVE-2026-90788

| EUVDEUVD-2026-77489 LOW
OS Command Injection (CWE-78)
2026-09-14 VulDB GHSA-ffxm-fmch-m6mq
PHP Command Injection Maccms10
2.0
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.0 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
9.1 CRITICAL

Admin credentials required (PR:H); OS command injection crosses web-to-OS boundary (S:C); full C/I/A impact is standard for arbitrary command execution.

3.1 AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

4
Analysis Generated
Sep 15, 2026 - 08:30 vuln.today
Severity Changed
Sep 14, 2026 - 14:37 NVD
MEDIUM LOW
CVSS changed
Sep 14, 2026 - 14:37 NVD
5.1 (MEDIUM) 2.0 (LOW)
CVE Published
Sep 14, 2026 - 14:00 cve.org
LOW 2.0

DescriptionCVE.org

A security flaw has been discovered in magicblack MacCMS10 2026.1000.4055. Affected by this vulnerability is an unknown functionality of the file /admin1.php/admin/template/index/path/.%40template%40default%40html%40label.html of the component Template Handler. Performing a manipulation results in os command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

AnalysisAI

OS command injection in MacCMS10 2026.1000.4055 allows an authenticated administrator to execute arbitrary system commands on the underlying server via the Template Handler component by submitting a crafted URL-encoded path parameter. A public proof-of-concept exploit exists, referenced through a GitHub issue report against the project repository. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Execution
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Vulnerability AssessmentAI

Exploitation Exploitation requires valid MacCMS10 administrator credentials sufficient to access the admin panel at /admin1.php - this corresponds to the PR:H metric in the provided CVSS 4.0 vector. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:H/UI:N) yields a score of 2.0 due to conservative impact metrics (VC:L/VI:L/VA:L), which appear inconsistent with CWE-78 (OS command injection) - a class that typically achieves full system compromise. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch has been identified at time of analysis - the maintainer was notified via GitHub issue (https://github.com/magicblack/maccms10/issues/1378) but has not responded. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-90788 vulnerability details – vuln.today
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