CVE-2026-6933

Description

The Premmerce Dev Tools plugin for WordPress is vulnerable to Remote Code Execution via missing authorization in versions up to and including 2.0. This is due to the 'generatePluginHandler' function lacking any authorization check before processing user-supplied POST data, combined with the 'createFromStub' function performing unsanitized string substitution of the 'premmerce_plugin_namespace' parameter directly into PHP stub files written to the wp-content/plugins/ directory. An attacker can inject a semicolon followed by arbitrary PHP code into the namespace parameter, causing the generated plugin file to contain and execute that code when accessed via HTTP. This makes it possible for authenticated attackers with Subscriber-level access and above to create arbitrary PHP files on the server and achieve remote code execution.

CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0061

Probability of exploitation

0.45%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-434 Unrestricted Upload

References

Other References

https://plugins.trac.wordpress.org/browser/premmerce-dev-tools/tags/2.0/src/Admin/Admin.php#L107 https://plugins.trac.wordpress.org/browser/premmerce-dev-tools/tags/2.0/src/PluginGenerator/PluginData.php#L97 https://plugins.trac.wordpress.org/browser/premmerce-dev-tools/tags/2.0/src/PluginGenerator/PluginGenerator.php#L125 https://plugins.trac.wordpress.org/browser/premmerce-dev-tools/trunk/src/Admin/Admin.php#L107 https://plugins.trac.wordpress.org/browser/premmerce-dev-tools/trunk/src/PluginGenerator/PluginData.php#L97 https://plugins.trac.wordpress.org/browser/premmerce-dev-tools/trunk/src/PluginGenerator/PluginGenerator.php#L125 https://www.wordfence.com/threat-intel/vulnerabilities/id/c43c060b-7a18-49ee-a753-ae1ed2f7e04d?source=cve

Frequently Asked Questions

What is CVE-2026-6933? +

The Premmerce Dev Tools plugin for WordPress is vulnerable to Remote Code Execution via missing authorization in versions up to and including 2.0. This is due to the 'generatePluginHandler' function lacking any authorization check before processing user-supplied POST data, combined with the 'createFromStub' function performing unsanitized string substitution of the 'premmerce_plugin_namespace' parameter directly into PHP stub files written to the wp-content/plugins/ directory. An attacker can inject a semicolon followed by arbitrary PHP code into the namespace parameter, causing the generated plugin file to contain and execute that code when accessed via HTTP. This makes it possible for authenticated attackers with Subscriber-level access and above to create arbitrary PHP files on the server and achieve remote code execution. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-6933? +

CVE-2026-6933 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0061, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-6933? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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