> CVE-2026-27146 [HIGH]

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PUBLISHED
2026-02-21 00:16
MODIFIED
2026-02-21 00:16
CVSS_SCORE V3
7.1
EPSS (Prob. Exploit)
0.20%
Top 90.9%
DATA SOURCES:
NVD đź”— 2026-02-21 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-10-25 OSV đź”— 2026-03-02

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/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
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
Unknown (P)
Interaction inconnue
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-352 CWE-434

> CWE DETAILED DESCRIPTIONS

CWE-352: Cross-Site Request Forgery - The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. | CWE-434: Unrestricted Upload of File with Dangerous Type - The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

GetSimple CMS: Cross-Site Request Forgery (CSRF) in File Upload Allows Arbitrary Uploads

AFFECTED PACKAGES:
Unknown / Unknown
ALIASES:
GHSA-26rv-8wpp-q84r

> HISTORIQUE DES MODIFICATIONS

Première apparition
21/02/2026 00:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:58
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-352: Cross-Site Request Forgery (CSRF) - The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could hav...
Nouvelle valeur:
CWE-352: Cross-Site Request Forgery - The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have origi...
📊 ENRICHISSEMENT 01/03/2026 06:46
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-352: Cross-Site Request Forgery (CSRF) - The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could hav...
Total des modifications: 2 Dernière mise à jour: 1 week ago

> REFERENCES

https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-26rv...
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