CVE-2026-4703
Unauthenticated PHP object injection in WS Form LITE WordPress plugin
Is CVE-2026-4703 being exploited?
Not confirmed. CVE-2026-4703 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 0.62% probability of exploitation in the next 30 days.
How severe is CVE-2026-4703?
CVE-2026-4703 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-2026-4703?
Yes. A fix has been recorded for CVE-2026-4703. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-4703 affect?
CVE-2026-4703 affects WordPress sites running WS Form LITE <= 1.10.80, Any site with additional plugins/themes providing POP gadget chains. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-4703?
Update WS Form LITE to a fixed version (>1.10.80) or remove it; audit/remove plugins/themes with POP chains.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated PHP object injection via deserialization; with a POP gadget chain in other plugins/themes can delete files, expose data, or achieve remote code execution.
Immediate action required
- affected<= 1.10.80
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.