CVE-2025-12379

Shortcodes and extra features for Phlox theme <= 2.17.13 - Authenticated (Contributor+) Stored Cross-Site Scripting via Modern Heading Widget

6.4 Medium

The Shortcodes and extra features for Phlox theme plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a combination of the 'tag' and ‘title_tag’ parameters in all versions up to, and including, 2.17.13 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.22%Up 0.2 points since Jan 11, 2026

What each source reports

CVE List Score used 6.4

Shortcodes and extra features for Phlox theme <= 2.17.13 - Authenticated (Contributor+) Stored Cross-Site Scripting via Modern Heading Widget

Record: CVE-2025-12379
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2026-1845 6.4

Record: EUVD-2026-1845
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-f45f-r423-g82r 6.4

The Shortcodes and extra features for Phlox theme plugin for WordPress is vulnerable to Stored...

Record: GHSA-f45f-r423-g82r
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 6.4

Record: CVE-2025-12379
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

averta shortcodes and extra features for phlox theme

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-12379 is a medium vulnerability (CVSS 6.4) in Averta Shortcodes And Extra Features For Phlox Theme, published January 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 12th percentile. No source names a fixed version.