Critical severity · published Aug 17, 2026
CVE-2026-74253
Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 16.0.0
10.0
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
Sourcerer extension for Joomla · regularlabs.com
1.0.0-15.0.0 · source: vendor
Affected product
SE
Sourcerer extension for Joomla
regularlabs.com
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74253
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-74253
regularlabs.com
https://regularlabs.com/
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