# CVE-2026-102426: Cross-site scripting in SP Page Builder (Pro) extension for Joomla

> An unauthenticated attacker can execute arbitrary JavaScript in the victim's browser via a crafted request parameter in the SP Page Builder Pro extension.

- **Severity:** Medium 5.3 (`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`)
- **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 available:** No
- **Published:** 5 Oct 2026
- **Updated:** 5 Oct 2026
- **Also known as:** GHSA-rwqh-f6r7-qgh8

## What is CVE-2026-102426?

CVE-2026-102426 is a medium-severity cross-site scripting vulnerability in joomshaper.com SP Page Builder (Pro) extension for Joomla, published on 5 Oct 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 - joomshaper.com - Reflected XSS in the Dynamic Content Filter addon in SP Page Builder Pro 3.0.0 - 5.6.1p2 - The slider minimum and maximum values are taken from the dc_filter_<fieldId> request parameter, split on the delimiter "l-r", HTML-escaped inside the data-value attribute, and then echoed without escaping as the span element's text content. An unauthenticated attacker reflects arbitrary HTML or JavaScript into the rendered page through a crafted dc_filter_<fieldId> value.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-102426?

It affects 1 product.


Products: Ollyo Sp Page Builder.

## How do I fix CVE-2026-102426?

No fix has been published for CVE-2026-102426 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-102426 being exploited?

There is no known exploitation of CVE-2026-102426 in the wild and no public exploit code.

## Other vulnerabilities in joomshaper.com SP Page Builder (Pro) extension for Joomla

- [CVE-2026-48908](https://insights.sbomify.com/CVE-2026-48908/): JoomShaper SP Page Builder Unrestricted Upload of File with Dangerous Type (critical 10.0, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-102426 and fix it if it is affected.

What it is: CVE-2026-102426 is a medium-severity cross-site scripting vulnerability in joomshaper.com SP Page Builder (Pro) extension for Joomla, published on 5 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-102426 in the wild and no public exploit code.

Affected product: joomshaper.com SP Page Builder (Pro) extension for Joomla. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-102426/ (Markdown: https://insights.sbomify.com/CVE-2026-102426/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-102426
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-102426
- OSV: https://osv.dev/vulnerability/CVE-2026-102426

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-102426/
Summaries are generated and may contain mistakes; the official description above is the record.