What’s Vulnerable › Vulnerabilities

CVE-2026-80204: Grav before 1.0.18 Authentication Bypass via Scoped API Key

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-26 · updated 2026-09-03
• Weakness: CWE-863

Description

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 products

• getgrav grav: before 1.0.18 — fixed in 1.0.18

How to fix

Upgrade to a fixed version: getgrav grav 1.0.18. Check the vendor advisory for mitigations.

References

• https://github.com/getgrav/grav/security/advisories/GHSA-mcx6-4rvg-7r8v
• https://www.vulncheck.com/advisories/grav-before-1.0.18-authentication-bypass-via-scoped-api-key-2

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