Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Unknown Custom Fields — Custom Fields for WooCommerce < 1.5.1 - Unauthenticated Arbitrary File Deletion via Path Traversal
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N C N H H 10.0 .0040 33.4 —
AFFECTED
Product Versions Fixed
Custom Fields unspecified —
TIMELINE
Jul 24 Reserved by WPScan
Aug 5 Published (CNA: WPScan)
Aug 6 EXPLOIT PUBLISHED — CVE-2026-16940 (Unknown Custom Fields). Public exploit reference added.
Description
The Custom Fields WordPress plugin before 1.5.1 does not validate a user-supplied file path before deletion, allowing unauthenticated users to delete arbitrary files on the server (such as wp-config.php), which can lead to a full site takeover.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| July 24, 2026 | Reserved | Reserved by WPScan |
| August 5, 2026 | Published | Published (CNA: WPScan) |
| August 6, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-16940 (Unknown Custom Fields). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Unknown | Custom Fields | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-16940 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.