CVE-2025-13035: Code Injection (CVSS 8)

Description

The Code Snippets plugin for WordPress is vulnerable to PHP Code Injection in all versions up to, and including, 3.9.1. This is due to the plugin's use of extract() on attacker-controlled shortcode attributes within the `evaluate_shortcode_from_flat_file` method, which can be used to overwrite the `$filepath` variable and subsequently passed to require_once. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute arbitrary PHP code on the server via the `[code_snippet]` shortcode using PHP filter chains granted they can trick an administrator into enabling the "Enable file-based execution" setting and creating at least one active Content snippet.

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CVSS v3.1 Score

8.0

HIGH

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

Weakness Type (CWE)

CWE-94 CWE-94

References

Other References

https://plugins.trac.wordpress.org/browser/code-snippets/tags/3.8.1/php/front-end/class-front-end.php#L295 https://plugins.trac.wordpress.org/browser/code-snippets/tags/3.8.1/php/front-end/class-front-end.php#L296 https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3397635%40code-snippets%2Ftrunk&old=3395415%40code-snippets%2Ftrunk&sfp_email=&sfph_mail=#file23 https://www.wordfence.com/threat-intel/vulnerabilities/id/c7c7247c-2fc3-46ff-858e-2242b7211476?source=cve

Frequently Asked Questions

What is CVE-2025-13035? +

The Code Snippets plugin for WordPress is vulnerable to PHP Code Injection in all versions up to, and including, 3.9.1. This is due to the plugin's use of extract() on attacker-controlled shortcode attributes within the `evaluate_shortcode_from_flat_file` method, which can be used to overwrite the `$filepath` variable and subsequently passed to require_once. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute arbitrary PHP code on the server via the `[code_snippet]` shortcode using PHP filter chains granted they can trick an administrator into enabling the "Enable file-based execution" setting and creating at least one active Content snippet. It has a CVSS v3.1 base score of 8.0 (HIGH).

How severe is CVE-2025-13035? +

CVE-2025-13035 has a CVSS v3.1 score of 8.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2025-13035? +

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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