CVE-2026-79363

Published Oct 9, 2026 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
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.

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
Metrics ssvc

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

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

Type Values Removed Values Added
First Time appeared Cloudron
Cloudron cloudron
Vendors & Products Cloudron
Cloudron cloudron
Type Values Removed Values Added
Title Stored XSS in Cloudron Branding Footer Enables Script Execution
Weaknesses CWE-79
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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 9, 2026, 8:46 PM
Reserved
Aug 25, 2026, 12:00 AM
Status
Deferred
Published
Oct 9, 2026, 2:17 PM
Modified
Oct 9, 2026, 9:17 PM