by Kastro
Paper/Archive/CVE-2026-80204

CVE-2026-80204

getgrav grav — Grav before 1.0.18 Authentication Bypass via Scoped API Key

EPSS 0.2%CVSS 9.3
critical.is priorityof 100
31
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 15.4.154 × 203.1No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

The Grav API plugin (getgrav/grav-plugin-api) before 1.0.18 does not apply the API-key scope cap in the injectSecurityTab() function of BlueprintController when deciding whether a page's security/permissions blueprint section is editable. Because the function performs raw isSuperAdmin()/hasPermission() checks without a request parameter, it cannot enforce scopeAllows(). A caller holding a scoped API key may therefore see (and potentially edit) page permission fields beyond the scope granted to the key. The end-to-end write-time impact was not fully confirmed by the reporter.

Affected

ProductAffectedFixed inSource
grav< 1.0.181.0.18CNA

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)5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorygithub.com/getgrav/grav/security/advisories/GHSA-mcx6-4rvg-7r8vwriteupvulncheck.com/advisories/grav-before-1.0.18-authentication-bypass-via-scoped-api-key-2