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

Medium 5.3 Published Updated

Attackers can execute arbitrary scripts or redirect users via the unvalidated return parameter in the Event Gallery extension.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-97165?

CVE-2026-97165 is a medium-severity cross-site scripting vulnerability in svenbluege.de Event Gallery for Joomla, published on 27 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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.

Weakness: CWE-79, CWE-601

Which versions are affected by CVE-2026-97165?

It affects 1 product.

Products include Svenbluege Event Gallery.

How do I fix CVE-2026-97165?

No fix has been published for CVE-2026-97165 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-97165 being exploited?

There is no known exploitation of CVE-2026-97165 in the wild and no public exploit code.

Sources

Also known as GHSA-3g59-55jw-r38v.

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