Admidio
CVE-2021-32630
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V5 - File Handling File type validation, storage isolation
MITRE ATT&CK
2 techniques across 2 tactics: Command and Control, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| 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 | A remote attacker could upload malicious files that can be executed on the server by sending crafted requests to the affected application. |
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Alert meAnalysisAI
Admidio is a free, open source user management system for websites of organizations and groups. 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. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. Admidio is a free, open source user management system for websites of organizations and groups. In Admidio before version 4.0.4, there is an authenticated RCE via .phar file upload. A php web shell can be uploaded via the Documents & Files upload feature. Someone with upload permissions could rename the php shell with a .phar extension, visit the file, triggering the payload for a reverse/bind shell. This can be mitigated by excluding a .phar file extension to be uploaded (like you did with .php .phtml .php5 etc). The vulnerability is patched in version 4.0.4. Affected products include: Admidio. Version information: version 4.0.4.
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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
Admidio is a free, open source user management system for websites of organizations and groups. In Admidio before version 4.0.4, there is an authenticated RCE via .phar file upload. A php web shell can be uploaded via the Documents & Files upload feature. Someone with upload permissions could rename the php shell with a .phar extension, visit the file, triggering the payload for a reverse/bind shell. This can be mitigated by excluding a .phar file extension to be uploaded (like you did with .php .phtml .php5 etc). The vulnerability is patched in version 4.0.4.
Threat Intelligence Overview
NVD
CVE.org
EPSS
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
Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.
Affected Products (CPE)NVD
Admidio is a free, open source user management system for websites of organizations and groups. Rated high severity (CVS
Admidio is a free, open source user management system for websites of organizations and groups. Rated high severity (CVS
Improper Neutralization of Formula Elements in a CSV File in GitHub repository admidio/admidio prior to 4.2.9. Rated hig
SQL Injection was discovered in adm_program/modules/dates/dates_function.php in Admidio 3.2.5. Rated high severity (CVSS
Authenticated SQL injection in Admidio through 4.3.16 allows users with role-assignment privileges to execute arbitrary
Unrestricted Upload of File with Dangerous Type in GitHub repository admidio/admidio prior to 4.2.10. Rated high severit
Insufficient Session Expiration in GitHub repository admidio/admidio prior to 4.1.9. Rated high severity (CVSS 7.1), thi
Admidio 3.3.5 contains a cross-site request forgery vulnerability that allows low-privilege users to increase their perm
Insufficient Session Expiration in GitHub repository admidio/admidio prior to 4.2.11. Rated medium severity (CVSS 6.5),
Admidio v4.2.12 and below is vulnerable to Cross Site Scripting (XSS). Rated medium severity (CVSS 6.1), this vulnerabil
Admidio is a free open source user management system for websites of organizations and groups. Rated medium severity (CV
Improper Access Control in GitHub repository admidio/admidio prior to 4.2.9. Rated medium severity (CVSS 5.4), this vuln
Exploit-DB