CVE-2026-36766 Shopizer is vulnerable to Cross-site Scripting

Medium 5.4 Published Updated

Authenticated attackers can execute arbitrary scripts in Shopizer via XSS in the XssHttpServletRequestWrapper class.

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

What is CVE-2026-36766?

CVE-2026-36766 is a medium-severity cross-site scripting vulnerability in n/a, published on 30 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Multiple authenticated cross-site scripting (XSS) vulnerabilities in the XssHttpServletRequestWrapper class of shopizer v3.2.5 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the getInputStream() or getReader() functions.

Weakness: CWE-79

Which versions are affected by CVE-2026-36766?

2 open source packages ship an affected version, including com.shopizer:shopizer.

PackageAffectedFixed in
com.shopizer:shopizer MavenAll versions to 2.16.0None
com.shopizer:shopizer MavenAll versions to 2.16.0None

How do I fix CVE-2026-36766?

No fix has been published for CVE-2026-36766 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-2026-36766 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-36766 exists.

Sources

Also known as GHSA-fqcw-2xhj-p63g.

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