CVE-2026-80204 Grav before 1.0.18 Authentication Bypass via Scoped API Key
Attackers with scoped API keys can bypass permission checks to view or edit page security settings beyond their granted scope in Grav CMS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-80204?
CVE-2026-80204 is a critical missing authorization vulnerability in getgrav grav, published on 26 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-863
Which versions are affected by CVE-2026-80204?
How do I fix CVE-2026-80204?
No fix has been published for CVE-2026-80204 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-80204 being exploited?
There is no known exploitation of CVE-2026-80204 in the wild and no public exploit code.
Sources
Also known as GHSA-c8f5-phgh-whxw.