CVE-2026-2599
Unauth PHP Object Injection in WordPress form plugins; POP chain required.
Is CVE-2026-2599 being exploited?
Not confirmed. CVE-2026-2599 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 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-2599?
CVE-2026-2599 is rated Critical with a CVSS score of 9.8. 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-2026-2599?
Yes. A fix has been recorded for CVE-2026-2599. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-2599 affect?
CVE-2026-2599 affects Database for Contact Form 7 (WordPress), WPForms (WordPress), Elementor Forms (WordPress). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-2599?
Update to latest plugin versions; audit for POP chains in use
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Requires a POP chain from another plugin; may delete files, leak data, or execute code if such a chain exists.
Patch when possible
- affected<= 1.4.7
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.