# 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.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Jul 2026
- **Updated:** 1 Jul 2026
- **Also known as:** GHSA-wpqv-235c-6c75

## 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 (Improper Control of Filename for Include/Require Statement in PHP Program)

## 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.

## Is CVE-2026-12923 being exploited?

There is no known exploitation of CVE-2026-12923 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12923 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-12923 in the wild and no public exploit code.

Affected product: emarket-design Video Gallery – YouTube Gallery, Playlist & Video Grid. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-12923/ (Markdown: https://insights.sbomify.com/CVE-2026-12923/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12923
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12923
- OSV: https://osv.dev/vulnerability/CVE-2026-12923

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-12923/
Summaries are generated and may contain mistakes; the official description above is the record.