Grav 2.0.15 before 2.2.13 contains an allowlist bypass vulnerability that allows page editors to invoke arbitrary public static methods by relocating data-*@ directives with unset-name@ or integer keys. Attackers with page-edit permission can embed crafted fields in Flex form overrides in page frontmatter to call methods like Folder::delete or Utils::download, deleting directories, overwriting files, or reading files outside the page tree.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Getgrav Grav
cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*
|
2.0.15
|
2.2.13
|
References 5
https://github.com/getgrav/grav/security/advisories/GHSA-47gg-mh38-9rr7
GitHub Security Advisory (GHSA-47gg-mh38-9rr7)
https://github.com/getgrav/grav/commit/4d9e3935f6b79cc1a157914554ccca6066a16f87
NVD
https://github.com/getgrav/grav/releases/tag/2.2.13
grav 2.2.13 Release Notes
https://github.com/getgrav/grav/blob/2.2.12/system/src/Grav/Common/Data/Bluepri…
NVD
https://www.vulncheck.com/advisories/grav-2.0.15-before-2.2.13-allowlist-bypass…
VulnCheck Advisory: Grav 2.0.15 before 2.2.13 Allowlist Bypass via Flex Form Override Directives