CVE-2026-103542 formtools.org Form Tools AJAX Endpoint actions.php smart_fill server-side request forgery
Remote attackers can exploit a server-side request forgery vulnerability in the Form Tools AJAX endpoint to access internal resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-103542?
CVE-2026-103542 is a medium-severity server-side request forgery vulnerability in formtools.org Form Tools, published on 1 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw has been found in formtools.org Form Tools up to 3.1.1. Impacted is the function smart_fill of the file /global/code/actions.php of the component AJAX Endpoint. This manipulation of the argument url causes server-side request forgery. The attack can be initiated remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-918
Which versions are affected by CVE-2026-103542?
How do I fix CVE-2026-103542?
No fix has been published for CVE-2026-103542 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-103542 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-103542 exists.
Sources
Also known as GHSA-pp9r-qvvc-cvhw.