CVE-2026-74253 PUBLISHED

Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 14.0.0

Assigner: Joomla
Reserved: 15.08.2026 Published: 17.08.2026 Updated: 17.08.2026

Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 14.0.0 - Regular Labs Sourcerer before 14.0.0 processes {source} blocks found in Joomla’s final rendered HTML without reliably determining where that code originated.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 10

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	regularlabs.com
Product	Sourcerer extension for Joomla
Versions	Default: unaffected Version 1.0.0-13.1.1 is affected

Credits

Łukasz Rybak finder

References

https://regularlabs.com/

Problem Types

CWE-94: Improper Control of Generation of Code CWE

Impacts

CAPEC-242: Code Injection