getgrav Grav up to 1.0.13 Blueprint Path Resolver resolveUserScope improper authorization

Summaryinfo

A vulnerability labeled as critical has been found in getgrav Grav up to 1.0.13. This vulnerability affects the function BlueprintPathResolver::resolveUserScope of the component Blueprint Path Resolver. The manipulation results in improper authorization. This vulnerability was named CVE-2026-75832. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in getgrav Grav up to 1.0.13. Affected is the function BlueprintPathResolver::resolveUserScope of the component Blueprint Path Resolver. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The Grav API plugin (getgrav/grav-plugin-api, bundled with Grav 2.0) before version 1.0.14 (fixed in 1.0.15) contains a missing authorization vulnerability in BlueprintPathResolver::resolveUserScope(). The method gates the users/<name> scope on the account's raw super-admin ACL flag (access.api.super) instead of validating the presented API key's actual scope. An attacker holding an API key scoped only to api.media.write minted on a super-admin account can bypass the authorization check and, via POST /blueprint-upload or GET /blueprint-files, write a file into another user's scope (in the shared user/accounts/ directory, constrained to image extensions by assertSafeExtension()) and browse that scope's file listing, despite the key not being granted api.users.write.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-75832 since 08/18/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1548.002.

Upgrading to version 1.0.15 eliminates this vulnerability.

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Productinfo

Vendor

• getgrav

Name

• Grav

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12
• 1.0.13

Website

• Product: https://github.com/getgrav/grav/

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