CVE-2026-12923 Video Gallery <= 4.0.3 - Authenticated (Subscriber+) Arbitrary Function Call via 'path' Parameter
Authenticated attackers can invoke arbitrary PHP functions via the path parameter, leading to information disclosure and potential code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-12923?
CVE-2026-12923 is a high-severity code injection vulnerability in emarket-design Video Gallery – YouTube Gallery, Playlist & Video Grid, published on 1 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Youtube Showcase plugin for WordPress is vulnerable to Arbitrary Function Call in versions up to and including 4.0.3. This is due to insufficient validation of the 'path' parameter in the emd_delete_file() AJAX handler in includes/common-functions.php. The user-supplied value is passed through sanitize_text_field(), has its trailing '_PLUGIN_DIR' substring stripped, and is then invoked as a PHP function name with no arguments via `$sess_name()`. The handler is gated only by a nonce — no current_user_can() check is present — and the nonce is emitted on any front-end page that renders a form shortcode containing file fields. This makes it possible for authenticated attackers, with Subscriber-level access and above, to invoke arbitrary zero-argument PHP functions (such as phpinfo, phpversion, get_defined_vars, error_get_last), resulting in sensitive information disclosure and potential further compromise depending on the functions available in the environment.
Weakness: CWE-98
Which versions are affected by CVE-2026-12923?
How do I fix CVE-2026-12923?
No fix has been published for CVE-2026-12923 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-12923 being exploited?
There is no known exploitation of CVE-2026-12923 in the wild and no public exploit code.
Sources
Also known as GHSA-wpqv-235c-6c75.