Regular Labs Sourcerer Extension up to 13.1.1 Source code injection

Summaryinfo

A vulnerability was found in Regular Labs Sourcerer Extension up to 13.1.1. It has been declared as critical. This issue affects some unknown processing. The manipulation of the argument Source results in code injection. This vulnerability is reported as CVE-2026-74253. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Regular Labs Sourcerer Extension up to 13.1.1. It has been classified as critical. Affected is some unknown processing. The manipulation of the argument source with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

This vulnerability is traded as CVE-2026-74253 since 08/15/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/17/2026). This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Regular Labs

Name

• Sourcerer Extension

Version

• 13.1.0
• 13.1.1

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

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Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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