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CVE-2025-15549

FluentCMS 2026 Stored XSS via SVG Upload in File Management

MEDIUM
4.8
CVSS Score
Published: January 29, 2026 at 07:41 PM UTC
Updated: June 17, 2026 at 08:38 AM UTC
1 product affected across 1 vendorFluentCMS

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

FluentCMS 2026 contains a stored cross-site scripting vulnerability that allows authenticated administrators to upload SVG files with embedded JavaScript via the File Management module. Attackers can upload malicious SVG files that execute JavaScript in the browser of any user accessing the uploaded file URL.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

FluentCMS· Fluentcms
95%
v ≤ 0.0.5

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Issue TrackingExploitVendor Advisory
Source: cverecord
https://github.com/fluentcms/FluentCMS/issues/2404
Third Party AdvisoryVDB Entry
Source: cverecord
https://www.vulncheck.com/advisories/fluentcms-stored-xss-via-svg-upload-in-file-management

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.8MEDIUMVulnCheck
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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