by Kastro
Paper/Archive/CVE-2026-75832

CVE-2026-75832

getgrav grav — Grav API Plugin before 1.0.14 Authorization Bypass

EPSS 0.3%CVSS 9.3
critical.is priorityof 100
32
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 22.5.225 × 204.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
grav< 1.0.141.0.14CNA

Scores by source

VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
VulnCheck (CNA)4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

advisorygithub.com/getgrav/grav/security/advisories/GHSA-435x-66r2-jwv2writeupvulncheck.com/advisories/grav-api-plugin-before-authorization-bypass