CVE-2020-36955 Grav CMS 1.6.30 Admin Plugin 1.9.18 - 'Page Title' Persistent Cross-Site Scripting
Authenticated attackers can inject malicious scripts via page titles in Grav CMS Admin Plugin, leading to code execution or account takeover when viewed.
- 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-2020-36955?
CVE-2020-36955 is a medium-severity cross-site scripting vulnerability in Getgrav Grav CMS Admin Plugin, published on 26 Jan 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 CMS 1.6.30 with Admin Plugin 1.9.18 contains a persistent cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts through the page title field. Attackers can create a new page with a malicious script in the title, which will be executed when the page is viewed in the admin panel or on the site.
Weakness: CWE-79
Which versions are affected by CVE-2020-36955?
How do I fix CVE-2020-36955?
No fix has been published for CVE-2020-36955 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-2020-36955 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36955 exists.
Sources
Also known as GHSA-p5pf-5rc8-g599.