CVE-2026-91073 Subscribe Forms 1.4.1 - 1.6.2 - Author+ Stored XSS via Attention Effect Form Setting
Authenticated authors can inject malicious scripts into form settings, leading to stored XSS that executes in visitors' browsers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-91073?
CVE-2026-91073 is a medium-severity cross-site scripting vulnerability in Unknown Subscribe Forms, published on 23 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-91073?
How do I fix CVE-2026-91073?
No fix has been published for CVE-2026-91073 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-91073 being exploited?
There is no known exploitation of CVE-2026-91073 in the wild and no public exploit code.
Sources
Also known as GHSA-48ww-7gg7-h943.