CVE-2026-97165: Joomla Extension - svenbluege.de - Reflected XSS and open redirect in Event Gallery extension < 6.5.0

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-27 · updated 2026-10-27
Weakness: CWE-79

Description

Joomla Extension - svenbluege.de - Reflected XSS and open redirect in Event Gallery extension < 6.5.0 - The “return” parameter is base64-decoded and written to the “Back” link without being validated.

Affected products

svenbluege.de Event Gallery for Joomla: before 6.5.0 — fixed in 6.5.0
svenbluege.de Event Gallery for Joomla: 1.0.0-6.0.0

How to fix

Upgrade to a fixed version: svenbluege.de Event Gallery for Joomla 6.5.0. Check the vendor advisory for mitigations.

References

https://www.svenbluege.de/

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