Getsimple Cms
CVE-2026-27146
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V3 - Web Frontend Security Anti-CSRF tokens, SameSite cookies
MITRE ATT&CK
1 technique across 1 tactic: Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 4.5 (MEDIUM). Attack vector: Network. Complexity: Low. Privileges required: High. User interaction: Required. Exploitation requires authentication. Public exploit/POC available. |
| Exploit ScenarioDerived | An attacker (requires authentication) could exploit this vulnerability to upload arbitrary files to the application without the victim’s knowledge or cons. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAIv1 – Mar 12, 2026
Arbitrary file upload in GetSimple CMS results from missing CSRF protection on the administrative upload endpoint, allowing an attacker to silently inject files through a malicious webpage visited by an authenticated admin. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker needs only to trick an authenticated user into visiting a crafted page to compromise the application.
Earlier versions of this analysis (1)
GetSimple CMS is a content management system. All versions of GetSimple CMS do not implement CSRF protection on the administrative file upload endpoint. [CVSS 4.5 MEDIUM]
RemediationAI
Monitor vendor advisories for a patch. Validate file types by content. Store uploads outside web root. Restrict network access to the affected service where possible.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-352 (Cross-Site Request Forgery (CSRF)). Affects Getsimple Cms. GetSimple CMS is a content management system. All versions of GetSimple CMS do not implement CSRF protection on the administrative file upload endpoint. As a result, an attacker can craft a malicious web page that silently triggers a file upload request from an authenticated victim’s browser. The request is accepted without requiring a CSRF token or origin validation. This allows an attacker to upload arbitrary files to the application without the victim’s knowledge or consent. In order to explo
Know when Getsimple Cms gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
GetSimple CMS is a content management system. All versions of GetSimple CMS do not implement CSRF protection on the administrative file upload endpoint. As a result, an attacker can craft a malicious web page that silently triggers a file upload request from an authenticated victim’s browser. The request is accepted without requiring a CSRF token or origin validation. This allows an attacker to upload arbitrary files to the application without the victim’s knowledge or consent. In order to exploit this vulnerability, the victim must be authenticated to GetSimple CMS (e.g., admin user), and visit an attacker-controlled webpage. This issue does not have a fix at the time of publication.
Executive ViewAI
Organizations using GetSimple CMS should be aware of moderate risk from CVE-2026-27146, a cross-site request forgery vulnerability rated CVSS 4.5. Users could be tricked into performing unintended actions. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.
Apply vendor patch. If patching is delayed: implement SameSite cookie attributes and anti-CSRF tokens.
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
Cross-Site Request Forgery exploits the automatic credential inclusion behavior of web browsers.
Affected Products (CPE)GitHub Advisory
More in Getsimple Cms
View allGetSimple CMS 3.3.4 allows remote attackers to obtain sensitive information via a direct request to (1) data/users/<user
An issue was discovered in GetSimple CMS through 3.3.15. Rated critical severity (CVSS 9.8), this vulnerability is remot
GetSimple CMS v3.3.16 was discovered to contain a remote code execution (RCE) vulnerability via the edited_file paramete
GetSimple CMS massiveAdmin plugin has a CSRF vulnerability enabling attackers to perform admin actions through crafted m
An issue was discovered in GetSimple CMS v3.3.13. Rated high severity (CVSS 8.8), this vulnerability is remotely exploit
Unauthenticated attackers can access sensitive files in GetSimple CMS when Apache's AllowOverride directive is disabled,
Arbitrary file read vulnerability in GetSimple CMS affects all versions through its Uploaded Files feature, allowing una
A Reflected Cross-Site Scripting (XSS) vulnerability in GetSimple CMS v3.3.16, in the admin/index.php login portal webpa
There is XSS in GetSimple CMS 3.4.0.9 via the admin/edit.php title field. Rated medium severity (CVSS 6.1), this vulnera
Cross-site scripting (XSS) vulnerability in admin/template/js/uploadify/uploadify.swf in GetSimple CMS 3.3.13 allows rem
GetSimple CMS CE 3.3.19 suffers from arbitrary code execution in the template editing function in the background managem
GetSimple CMS allows authenticated users to upload SVG files containing malicious JavaScript through the administrative
Exploit-DB