XSS in Getgrav Grav-Plugin-Shortcode-Core
CVE-2026-85599
Grav Shortcode Core before 6.2.5 contains stored cross-site scripting vulnerabilities in the [lorem] tag parameter and [details] summary parameter that are written to rendered pages without escaping. Attackers with page-edit access can inject arbitrary HTML and JavaScript that executes in the browsers of all page visitors, including administrators.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/getgrav/grav/security/advisories/GHSA-hvm8-wx3f-j774 (vendor-advisory)
- www.vulncheck.com/advisories/grav-shortcode-core-before-6.2.5-stored-xss-via-un… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-85599?
- CVE-2026-85599 is a high-severity vulnerability in Getgrav Grav-Plugin-Shortcode-Core, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-09-04.
- How severe is CVE-2026-85599?
- High severity. CVSS v3 base score is 7.2 out of 10.