CVE-2025-4776CWE-79cross-site-scripting

CVE-2025-4776

Medium · published January 6, 2026

CVSS v3.1
6.4
EPSS
0%
Percentile
7.7
In the wild
Unconfirmed
What it is

The Phlox theme for WordPress is vulnerable to Stored Cross-Site Scripting via the `data-caption` HTML attribute in all versions up to, and including, 2.17.7 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.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00185 · 7.7th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-01-06T12:15Z
References (2)
https://themes.trac.wordpress.org/changeset/300858/ · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/a49f8150-a27d-4801-8923-31af335c3cbd?source=cve · [email protected]
EPSS history
Timeline
  • 06 JAN 06:36Z
    Phlox <= 2.17.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via `data-caption` HTML Attribute
    cvelistv5