# CVE-2026-39468: WordPress Meta Box – WordPress Custom Fields Framework plugin <= 5.11.1 - Arbitrary File Deletion vulnerability

- Exploited (CISA KEV): no
- Published: 2026-06-15
- CVSS: 6.8 MEDIUM (v3.1)
- EPSS: 1.2% (69th percentile)
- CWE: CWE-22

Contributor Arbitrary File Deletion in Meta Box – WordPress Custom Fields Framework <= 5.11.1 versions.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | No public claim | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2026-10-21 | 128 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### F5

- 2026-10-21 · new · rule 200014048
  > Added: signature 200014048 "WordPress Meta Box Arbitrary File Deletion" (Abuse of Functionality, risk High), systems: WordPress. References: CVE-2026-39468.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: passed (0 of 1 requests blocked), template CVE-2026-39468, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: passed (0 of 1 requests blocked), template CVE-2026-39468, 2026-11-02

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2026-39468 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2026-39468