CVE-2026-74253
Critical
Description
Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0 - Regular Labs Sourcerer before 16.0.0 processes {source} blocks found in Joomla’s final rendered HTML without reliably determining where that code originated.
SeverityCritical
CVSS10.0
Exploit probability—
ProductSourcerer extension for Joomla
PublishedAug 17, 2026
First seenAug 17, 2026
Weakness typeCWE-94Code injection
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| regularlabs.com Sourcerer extension for Joomla | 1.0.0-15.0.0 | — |
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