CVE-2026-12923 json
Video Gallery <= 4.0.3 - Authenticated (Subscriber+) Arbitrary Function Call via 'path' Parameter
published 2026-07-01 4 mo ago modified 2026-07-01 4 mo ago also EUVD-2026-40897
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 mo ago
Exploit prediction
0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- emarket-design Video Gallery – YouTube Gallery, Playlist & Video Grid
Classification
- Weakness
-
- CWE-98 Improper Control of Filename for Include/Require Statement in PHP Program
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/be4743d5-e4ca-4579-84e2-5eb3ef0e274d?source=cve
- plugins.trac.wordpress.org /browser/youtube-showcase/tags/4.0.3/includes/common-functions.php#L1070
- plugins.trac.wordpress.org /browser/youtube-showcase/tags/4.0.3/includes/common-functions.php#L1067
- plugins.trac.wordpress.org /browser/youtube-showcase/tags/4.0.3/includes/class-install-deactivate.php#L53
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&old=3588198%40youtube-showcase&new=3588198%40youtube-showcase&sfp_e
Sources
- CVE List CVE-2026-12923
- NVD CVE-2026-12923
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.