CVE-2026-74253criticalCWE-94

CVE-2026-74253: critical vulnerability in regularlabs.com Sourcerer extension for Joomla

Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0

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28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 10epss 0.3%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
regularlabs.com · Sourcerer extension for Joomla
Related CVEs — regularlabs.com Sourcerer extension for Joomla

In the same product, most dangerous first.

CVE-2026-64796CRITICALJoomla Extension - regularlabs.com - various code injection vectors in Sourcerer extensionEPSS 0.5%CVE-2026-64792HIGHJoomla Extension - regularlabs.com - disclosure of restricted content via search index in various Regular Labs extensionsEPSS 0.4%CVE-2026-63265HIGHJoomla Extension - regularlabs.com - Inconsistent CSRF token checks / privilege checks in various Regular Labs extension AJAX endpointsEPSS 0.2%