---
id: CVE-2026-97165
title: >-
  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.
summary: >-
  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.
severity: medium
cvss: 5.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N'
cwe:
  - CWE-79
  - CWE-601
vendor: svenbluege.de
product: Event Gallery for Joomla
affected:
  - event_gallery_for_joomla 1.0.0-6.0.0
published: '2026-09-27'
updated: '2026-09-27'
sourceUpdated: '2026-09-27T12:17:12.127'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97165'
references:
  - url: 'https://www.svenbluege.de/'
    label: security@joomla.org
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-09-27T11:51:26.663Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.