Vulnerability in getgrav grav

[ Description ]Official description

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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/getgrav/grav/blob/2.2.12/system/src/Grav/Common/Data/Blueprint.php
• github.com/getgrav/grav/commit/4d9e3935f6b79cc1a157914554ccca6066a16f87
• github.com/getgrav/grav/releases/tag/2.2.13
• github.com/getgrav/grav/security/advisories/GHSA-47gg-mh38-9rr7
• www.vulncheck.com/advisories/grav-2.0.15-before-2.2.13-allowlist-bypass-via-flex-form-o…