CVE-2026-27147

MEDIUM
2026-02-21 [email protected]
5.4
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 22:04 vuln.today
PoC Detected
Feb 24, 2026 - 13:11 vuln.today
Public exploit code
CVE Published
Feb 21, 2026 - 00:16 nvd
MEDIUM 5.4

Tags

XSS Getsimple Cms

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.

Analysis

GetSimple CMS allows authenticated users to upload SVG files containing malicious JavaScript through the administrative interface, which executes in browsers when the files are accessed due to insufficient sanitization. Public exploit code exists for this stored XSS vulnerability, and no patch is currently available, leaving all GetSimple CMS versions at risk.

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

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Priority Score

47
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +27
POC: +20

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CVE-2026-27147 vulnerability details – vuln.today
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