Ohio Extra <= 3.4.7 - Unauthenticated Arbitrary Shortcode Execution
Strategic Overview
- Status
- Unpatched
- Affected Plugin
- Ohio Extra
- Affected Version
<= 3.4.7- CVSS
- 6.5Medium
- Weakness type
- CWE-94 · Improper Control of Generation of Code ('Code Injection')
- CVE
CVE-2025-26924
At a glance
CVE-2025-26924 is a medium-severity Improper Control of Generation of Code ('Code Injection') vulnerability in the Ohio Extra WordPress plugin, affecting versions <= 3.4.7. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity). Exploitation requires no authentication. No fixed release has been reported yet; treat installations running this software as exposed. Disclosed February 2025, reported by luc.
Vulnerability Overview
The Ohio Extra plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 3.4.7. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-94: Improper Control of Generation of Code ('Code Injection')
Reaching this weakness in Ohio Extra <= 3.4.7 takes no account at all. Code injection means input from a request reaches a language construct that evaluates code, so the attacker's text is executed rather than treated as data.
The injected code runs with the web server's privileges, giving the attacker the same access to the database and filesystem as WordPress itself. No fixed build of this plugin is recorded for Ohio Extra yet, so installs running <= 3.4.7 stay exposed until the vendor ships one.
Remediation
No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
How does WordSec protect against this?
Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.
- Firewall
- Scanner
- Login Security
External References
Related records
Other vulnerabilities in Ohio Extra
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