Medium severity · published Sep 4, 2026
CVE-2026-85603
Grav Admin Plugin Path Traversal via Save As Language Code
6.5
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
grav · getgrav
before 1.10.55 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-85603
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85603
github.com
https://github.com/getgrav/grav/security/advisories/GHSA-h9g9-73c3-23c9
www.vulncheck.com
https://www.vulncheck.com/advisories/grav-admin-plugin-path-traversal-via-save-as-language-code
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