SEPTEMBER 22, 2026
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Case File

CVE-2026-6399

MEDIUM · CVSS 4.4 EPSS 0.23%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-05-20 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.4. It affects WordPress. Exploitation may require the attacker to be authenticated.

CVE
CVE-2026-6399
Severity
MEDIUM
CVSS
4.4
EPSS
0.23%
WordPress

Original NVD Description

The General Options plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 1.1.0. This is due to the use of sanitize_text_field() for output escaping in the Contact Number (ad_contact_number) field — a function that strips HTML tags but does not encode double-quote characters to their HTML entity equivalent ("). When the stored value is echoed inside a double-quoted HTML attribute (value="..."), an attacker-supplied double-quote character breaks out of the attribute context. Even with WordPress's wp_magic_quotes mechanism (which prefixes quotes with a backslash), the resulting \" sequence is NOT treated as an escaped quote by HTML parsers — the backslash is rendered as a literal character and the bare double-quote still closes the attribute. This makes it possible for authenticated attackers with Administrator-level access and above to inject arbitrary web scripts in the admin settings page that will execute whenever any administrator visits the General Options settings page.