Vulnerability · Published Sep 4, 2026 · Assigned by VulnCheck
CVE-2026-85603Grav Admin Plugin Path Traversal via Save As Language Code
Medium 6.5
In plain English
A medium-severity security flaw in grav from getgrav. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.6%top 49.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-73 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
References
- GitHub Security Advisory (GHSA-h9g9-73c3-23c9) vendor-advisory
- VulnCheck Advisory: Grav Admin Plugin Path Traversal via Save As Language Code third-party-advisory