Cloudron 9.1.7 and 9.2 contain a stored cross-site scripting (XSS) vulnerability in the Branding Footer feature. An authenticated administrator can store crafted HTML containing JavaScript event handlers in the Footer setting. The stored value is rendered without sufficient sanitization on the public login / OpenID interaction page and in the System Event Log, causing attacker-controlled JavaScript to execute in the Cloudron web origin when an affected page is viewed.

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Solution

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History

Sat, 10 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 10 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
Title Stored XSS in Cloudron Branding Footer Enables Script Execution

Fri, 09 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L'}


Fri, 09 Oct 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Cloudron
Cloudron cloudron
Vendors & Products Cloudron
Cloudron cloudron

Fri, 09 Oct 2026 16:15:00 +0000

Type Values Removed Values Added
Title Stored XSS in Cloudron Branding Footer Enables Script Execution
Weaknesses CWE-79

Fri, 09 Oct 2026 14:15:00 +0000

Type Values Removed Values Added
Description Cloudron 9.1.7 and 9.2 contain a stored cross-site scripting (XSS) vulnerability in the Branding Footer feature. An authenticated administrator can store crafted HTML containing JavaScript event handlers in the Footer setting. The stored value is rendered without sufficient sanitization on the public login / OpenID interaction page and in the System Event Log, causing attacker-controlled JavaScript to execute in the Cloudron web origin when an affected page is viewed.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-10-09T20:46:49.943Z

Reserved: 2026-08-25T00:00:00.000Z

Link: CVE-2026-79363

cve-icon Vulnrichment

Updated: 2026-10-09T20:45:38.480Z

cve-icon NVD

Status : Deferred

Published: 2026-10-09T14:17:22.777

Modified: 2026-10-09T21:17:06.170

Link: CVE-2026-79363

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-10T00:30:09Z

Weaknesses