CVE-2026-62666
Grav API plugin flaw allows non-super users to create super-admin API keys.
Is CVE-2026-62666 being exploited?
Not confirmed. CVE-2026-62666 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.43% probability of exploitation in the next 30 days.
How severe is CVE-2026-62666?
CVE-2026-62666 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-62666?
Yes. A fix has been recorded for CVE-2026-62666. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-62666 affect?
CVE-2026-62666 affects Grav CMS (API Plugin) <= 1.0.5, Grav API Plugin prior to 1.0.6, Websites using Grav headless API. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-62666?
Upgrade Grav API Plugin to >=1.0.6, revoke suspicious API keys, audit admin accounts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Non-super users with api.users.write can mint API keys scoped to access.api.super, gaining persistent super-admin access and can rotate/disable 2FA.
Immediate action required
- affected< 1.0.6
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.