CVE-2026-72821 Grav Form Plugin before 9.1.15 Stored XSS via Radio Toggle
Attackers with form authoring permissions can inject scripts into radio/toggle labels, executing code in visitors' and administrators' browsers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-72821?
CVE-2026-72821 is a medium-severity cross-site scripting vulnerability in getgrav grav, published on 14 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Grav Form plugin versions before 9.1.15 contain a stored cross-site scripting vulnerability in radio and toggle field option labels rendered with the Twig |raw filter. Attackers with form authoring permissions can inject HTML and script payloads in option labels that execute in the browsers of visitors and administrators viewing the form.
Weakness: CWE-79
Which versions are affected by CVE-2026-72821?
How do I fix CVE-2026-72821?
No fix has been published for CVE-2026-72821 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-2026-72821 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-72821 exists.
Sources
Also known as GHSA-3mpx-xv5p-92mv.