What is the CVSS score of CVE-2026-27146?

CVE-2026-27146 has a CVSS 3.1 base score of 4.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N. EPSS exploitation probability: 0.0%.

Which versions of Getsimple Cms are affected by CVE-2026-27146?

Organizations using GetSimple CMS should be aware of moderate risk from CVE-2026-27146, a cross-site request forgery vulnerability rated CVSS 4.5.

Is there a public PoC exploit available for CVE-2026-27146?

Yes, a public proof-of-concept exploit is available for CVE-2026-27146. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-27146?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify anti-CSRF tokens are enforced.

Getsimple Cms CVE-2026-27146

MEDIUM

Cross-Site Request Forgery (CSRF) (CWE-352)

2026-02-21 security-advisories@github.com

CSRF Getsimple Cms Getsimple Ce

4.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.5 MEDIUM

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:04 vuln.today

PoC Detected

Feb 24, 2026 - 13:13 vuln.today

Public exploit code

CVE Published

Feb 21, 2026 - 00:16 nvd

MEDIUM 4.5

DescriptionGitHub 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.

AnalysisAI

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.

Technical ContextAI

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

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.