CVE-2026-66627
Authenticated contributor can upload arbitrary files in GP Premium WordPress plugin
Is CVE-2026-66627 being exploited?
Not confirmed. CVE-2026-66627 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 0.45% probability of exploitation in the next 30 days.
How severe is CVE-2026-66627?
CVE-2026-66627 is rated Critical with a CVSS score of 9.9. 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-2026-66627?
Yes. A fix has been recorded for CVE-2026-66627. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-66627 affect?
CVE-2026-66627 affects GeneratePress GP Premium <= 2.5.5, WordPress sites using GP Premium plugin. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-66627?
Upgrade GP Premium to patched version, restrict contributor uploads, scan for webshells
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated contributor can upload arbitrary files (including PHP), enabling remote code execution, site takeover, and privilege escalation.
Immediate action required
- affected<= 2.5.5
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.