Vulnerability in Getgrav Grav
CVE-2026-85603
Grav versions before 1.10.55 contain a path traversal vulnerability in the admin plugin's Save As action that fails to validate the language code parameter. An authenticated admin user with admin.pages.create permission can supply directory traversal sequences in the lang POST field to write arbitrary .md files outside the pages directory with attacker-controlled content.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.006 (49.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/getgrav/grav/security/advisories/GHSA-h9g9-73c3-23c9 (vendor-advisory)
- www.vulncheck.com/advisories/grav-admin-plugin-path-traversal-via-save-as-langu… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-85603?
- CVE-2026-85603 is a medium-severity vulnerability in Getgrav Grav, classified under External Control of File Name or Path. CVSS score: 6.5/10. Published 2026-09-04.
- How severe is CVE-2026-85603?
- Medium severity. CVSS v3 base score is 6.5 out of 10.