CVE-2026-9227
RCE via arbitrary file upload in Gutenberg Blocks plugin
Is CVE-2026-9227 being exploited?
Not confirmed. CVE-2026-9227 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 0.68% probability of exploitation in the next 30 days.
How severe is CVE-2026-9227?
CVE-2026-9227 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-2026-9227?
Yes. A fix has been recorded for CVE-2026-9227. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-9227 affect?
CVE-2026-9227 affects WordPress sites using Gutenberg Blocks plugin (<=2.20.1). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-9227?
Patch to 2.20.2+; audit uploads; restrict author roles
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated authors can upload arbitrary files, enabling remote code execution on affected WordPress sites (<=2.20.1).
Immediate action required
- affected<= 2.20.1
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.