CVE-2026-85641 Formidable Forms 6.34 - Unauthenticated Stored Content Injection via 'updated_by' Parameter
Unauthenticated attackers can inject malicious HTML into form entries via the updated_by parameter, leading to stored XSS in the admin view.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-85641?
CVE-2026-85641 is a medium-severity cross-site scripting vulnerability in Unknown Formidable Forms, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The Formidable Forms WordPress plugin before 6.35 does not restrict who can set the identifier recording which user last edited a form entry, and relies on that identifier when deciding whether to strip HTML from stored entry values, allowing unauthenticated visitors to have markup rendered in the admin entry view that would otherwise be removed, and to attribute their submission to an administrator who never made it.
Weakness: CWE-345
Which versions are affected by CVE-2026-85641?
How do I fix CVE-2026-85641?
No fix has been published for CVE-2026-85641 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-2026-85641 being exploited?
There is no known exploitation of CVE-2026-85641 in the wild and no public exploit code.
Sources
Also known as GHSA-c92r-vvxr-8r78.