CVE-2026-102426: JoomShaper SP Page Builder Pro reflected XSS in Dynamic Content Filter

CVE-2026-102426 · Severity: info · Published 2026-10-05

SP Page Builder Pro is a drag-and-drop page composer extension for Joomla that allows website builders to create pages visually. The Dynamic Content Filter addon contains a reflected cross-site scripting vulnerability that allows an attacker to inject malicious JavaScript into a webpage through a crafted URL parameter. An unauthenticated attacker could trick users into visiting a malicious link and steal session cookies, credentials, or perform actions on behalf of the victim.

Technologies: JoomShaper SP Page Builder Pro. Vendors: JoomShaper.

Quick answers

Is CVE-2026-102426 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-102426 being exploited in the wild.
How severe is CVE-2026-102426?
Informational severity, published 5 October 2026.
Which products and versions are affected?
JoomShaper SP Page Builder Pro 3.0.0 to 5.6.1p2.
Is there a fix for CVE-2026-102426?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-102426 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-102426?
Check whether you run JoomShaper SP Page Builder Pro at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in the Dynamic Content Filter addon where slider minimum and maximum values from the dc_filter_<fieldId> request parameter are parsed, HTML-escaped for the data-value attribute, but then output unescaped as span element text content. An unauthenticated attacker can inject arbitrary HTML or JavaScript through a crafted dc_filter_<fieldId> parameter value via reflected XSS. The vulnerability affects versions 3.0.0 through 5.6.1p2.

Affected products

  • JoomShaper SP Page Builder Pro 3.0.0 to 5.6.1p2

Timeline

  • 2026-10-05: disclosed

References

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