Video Gallery <= 4.0.3 — Authenticated (Subscriber+) Arbitrary Function Call via 'path' Parameter
CVE-2026-12923Published · Updated Action summary
Affected: ≤4.0.3Update to 4.0.4 or newer
All remediation steps- Severity
- High7.5
- CVSS
- 7.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:HAttack complexity- High
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-98 Local File Inclusion
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Video Gallery – YouTube Gallery, Playlist & Video Grid youtube-showcase
- Affected≤ 4.0.3
- Patched in4.0.4
Update to 4.0.4 or newer.
You are affected if you run ≤ 4.0.3. Version 4.0.4 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Video Gallery – YouTube Gallery, Playlist & Video Grid.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 4.0.4, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Video Gallery – YouTube Gallery, Playlist & Video Grid to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Wordfence PRISM.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Video Gallery – YouTube Gallery, Playlist & Video Grid
All 9| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤4.1.0No patch available | CVE-2026-61995 | |
| Medium6.4 | Authenticated (Author+) Stored Cross-Site Scripting via Attachment 'post_title' via emd_mb_meta Shortcode ≤4.0.4Update to 4.0.5 | CVE-2026-15790 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤3.5.1Update to 3.5.2 | CVE-2025-15636 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤2.5.0Update to 2.5.1 | CVE-2025-58915 | |
| High8.1 | Unauthenticated PHP Object Injection ≤3.5.1Update to 3.5.2 | CVE-2025-54731 |
- High7.2Unauthenticated Stored Cross-Site Scripting
≤4.1.0No patch available
- Medium6.4Authenticated (Author+) Stored Cross-Site Scripting via Attachment 'post_title' via emd_mb_meta Shortcode
≤4.0.4Update to 4.0.5
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤3.5.1Update to 3.5.2
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤2.5.0Update to 2.5.1
- High8.1Unauthenticated PHP Object Injection
≤3.5.1Update to 3.5.2
Same weakness (Local File Inclusion)
All Local File Inclusion| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity high, CVSS 7.5
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.