XSS in Getgrav Grav Cms Admin Plugin
CVE-2020-36955
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (48.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- Getgrav Grav Cms Admin Plugin — versions 0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/49264 (exploit)
- getgrav.org/ (product)
- www.vulncheck.com/advisories/grav-cms-admin-plugin-page-title-persistent-cross-… (third-party-advisory)
Frequently asked questions
- What is CVE-2020-36955?
- CVE-2020-36955 is a medium-severity vulnerability in Getgrav Grav Cms Admin Plugin, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-01-26.
- How severe is CVE-2020-36955?
- Medium severity. CVSS v3 base score is 6.4 out of 10.