CVE-2020-27850: Gravity Forms stored Cross-Site Scripting (XSS) vulnerability
4.8
CVSS Score
3.1
Basic Information
CVE ID
GHSA ID
EPSS Score
0.48052%
CWE
Published
5/24/2022
Updated
4/24/2024
KEV Status
No
Technology
PHP
Technical Details
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| wp-premium/gravityforms | composer | >= 2.4, < 2.4.21 | 2.4.21 |
Vulnerability Intelligence
Miggo AI
Root Cause Analysis
The vulnerability exists in the form import functionality where user-supplied form data is processed. The GFExport::import_file function is the logical entry point for form imports in Gravity Forms. The stored XSS vulnerability implies that: 1) Imported form content wasn't properly sanitized before storage, and 2) Admin/Editor interfaces later render this unsanitized content. While exact code isn't available, Gravity Forms' architecture places import handling in the GFExport class, and the vulnerability pattern matches insufficient input sanitization during XML/JSON form data processing before database persistence.