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Status published
Medium
CVE-2021-26030
[20210401] - Core - Escape xss in logo parameter error pages
Vulnerability Description
An issue was discovered in Joomla! 3.0.0 through 3.9.25. Inadequate escaping allowed XSS attacks using the logo parameter of the default templates on error page
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
Joomla! Project
View all reports →Affected Software
Joomla! CMS
Vulnerable Versions:
3.0.0-3.9.25
Timeline
Official Publish:
April 14th, 2021
Last Modified:
February 25th, 2026
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.