Medium severity · published Feb 20, 2026
CVE-2026-27147
GetSimple CMS: Stored Cross-Site Scripting (XSS) via SVG File Upload (Authenticated)
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
GetSimple CMS is a content management system. All versions of GetSimple CMS are vulnerable to XSS through SVG file uploads. Authenticated users can upload SVG files via the administrative upload functionality, but they are not properly sanitized or restricted, allowing an attacker to embed malicious JavaScript. When the uploaded SVG file is accessed, the script executes in the browser. This issue does not have a fix at the time of publication.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GE
GetSimpleCMS-CE · GetSimpleCMS-CE
<= 3.3.22 · source: vendor
GC
Getsimple Cms · Getsimple-ce
through 3.3.22 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27147
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27147
Exploit
https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-5gmq-hrcx-6w45
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