CVE-2026-91073
Medium
Description
The Subscribe Forms WordPress plugin before 1.6.3 does not sanitise and escape one of its form settings before outputting it in a page, allowing authenticated users with the Author role and above to perform Stored Cross-Site Scripting attacks that execute in the browser of any visitor who views a page embedding the form, including logged-out visitors and administrators.
SeverityMedium
CVSS6.8
Exploit probability—
ProductSubscribe Forms
PublishedSep 23, 2026
First seenSep 23, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- Subscribe Forms1.6.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Subscribe Forms | 1.4.1 ≤ v < 1.6.3 | 1.6.3 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.