CVE-2026-18478

Stored XSS in Magnolia CMS

Published Aug 10, 2026 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Description
Magnolia CMS is vulnerable to Stored XSS in import functionality. An attacker with editor privileges can inject arbitrary HTML and JS into the name of uploaded image, which will be rendered/executed when opening uploaded image.




The issue was fixed in version 6.3.10

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Magnolia-cms
Magnolia-cms magnolia Cms
Vendors & Products Magnolia-cms
Magnolia-cms magnolia Cms
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Magnolia CMS is vulnerable to Stored XSS in import functionality. An attacker with editor privileges can inject arbitrary HTML and JS into the name of uploaded image, which will be rendered/executed when opening uploaded image. The issue was fixed in version 6.3.10
Title Stored XSS in Magnolia CMS
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
CERT-PL
Published
Updated
Aug 10, 2026, 5:58 PM
Reserved
Jul 31, 2026, 11:05 AM
Status
Deferred
Published
Aug 10, 2026, 2:17 PM
Modified
Oct 23, 2026, 8:10 PM