CVE-2025-9129

MEDIUM

Flexi - Guest Submit <= 4.28 - Authenticated Stored Cross-Site Scripting via flexi-form-tag Shortcode

Title source: llm
STIX 2.1

Description

The Flexi plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin for WordPress's flexi-form-tag shortcode in all versions up to, and including, 4.28 due to insufficient input sanitization and output escaping on user supplied attributes. 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.

References (3)

Core 3

Scores

CVSS v3 6.4
EPSS 0.0022
EPSS Percentile 13.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
odude/Flexi – Guest Submit < 4.28
Published Oct 03, 2025
Tracked Since Feb 18, 2026