Monstra
CVE-2018-6383
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation completeness
|
| Impact | CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system. |
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Alert meAnalysisAI
Monstra CMS through 3.0.4 has an incomplete "forbidden types" list that excludes .php (and similar) file extensions but not the .pht or .phar extension, which allows remote authenticated Admins or. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Affects your stack
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Technical ContextAI · show details
This vulnerability is classified under CWE-184. Monstra CMS through 3.0.4 has an incomplete "forbidden types" list that excludes .php (and similar) file extensions but not the .pht or .phar extension, which allows remote authenticated Admins or Editors to execute arbitrary PHP code by uploading a file, a different vulnerability than CVE-2017-18048. Affected products include: Monstra. Version information: through 3.0.4.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Monstra CMS through 3.0.4 has an incomplete "forbidden types" list that excludes .php (and similar) file extensions but not the .pht or .phar extension, which allows remote authenticated Admins or Editors to execute arbitrary PHP code by uploading a file, a different vulnerability than CVE-2017-18048.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Exploit-DB
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Affected Products (CPE)NVD
A remote code execution (RCE) vulnerability in the component /admin/index.php?id=themes&action=edit_template&filename=bl
plugins/box/users/users.plugin.php in Monstra CMS 3.0.4 allows Login Rate Limiting Bypass via manipulation of the login_
Monstra Cms versions up to 3.0.4 is affected by unrestricted upload of file with dangerous type (CVSS 8.8).
Monstra CMS 3.0.4 allows remote authenticated users to upload and execute arbitrary PHP code via admin/index.php?id=file
In Monstra CMS 3.0.4, an attacker with 'Editor' privileges can change the password of the administrator via an admin/ind
Monstra CMS 3.0.4 allows remote code execution via an upload_file request for a .zip file, which is automatically extrac
admin/index.php in Monstra CMS 3.0.4 allows arbitrary directory listing via id=filesmanager&path=uploads/.......//./....
An arbitrary file upload vulnerability in Monstra CMS v3.0.4 allows attackers to execute arbitrary code via uploading a
Monstra CMS 3.0.4 allows an attacker, who already has administrative access to modify .chunk.php files on the Edit Chunk
Monstra CMS 3.0.4 does not properly restrict modified Snippet content, as demonstrated by the admin/index.php?id=snippet
Monstra CMS through 3.0.4 allows remote authenticated users to take over arbitrary user accounts via a modified login pa
Monstra CMS 3.0.4 allows remote attackers to delete files via an admin/index.php?id=filesmanager&delete_dir=./&path=uplo