CVE-2026-18478 - Vulnerability Details - OpenCVE

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

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

Link	Providers
https://cert.pl/en/posts/2026/08/CVE-2026-18478
https://docs.magnolia-cms.com/product-docs/6.3/releases/release-notes-for-magnolia-cms-6.3.10/
https://www.magnolia-cms.com/

History

Mon, 10 Aug 2026 19:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Mon, 10 Aug 2026 13:45:00 +0000

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		https://cert.pl/en/posts/2026/08/CVE-2026-18478 https://docs.magnolia-cms.com/product-docs/6.3/releases/release-notes-for-magnolia-cms-6.3.10/ https://www.magnolia-cms.com/
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'}`

MITRE

Status: PUBLISHED

Assigner: CERT-PL

Published: 2026-08-10T13:00:16.854Z

Updated: 2026-08-10T17:58:41.118Z

Reserved: 2026-07-31T11:05:25.198Z

Link: CVE-2026-18478

Vulnrichment

Updated: 2026-08-10T17:58:37.664Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-08-10T18:45:17Z

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