CVE-2026-16940 | BDVDB-2026-355376 Detail

Custom Fields

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

References#

https://wpscan.com/vulnerability/a315a6ac-3ffb-4735-92ca-6e85338f8807/

Exploit#

https://wpscan.com/vulnerability/a315a6ac-3ffb-4735-92ca-6e85338f8807/

History#

Version 12026-08-05Record published in the CVE List.
Version 22026-08-06Most recent update recorded in the CVE List.

Published

Published: 2026-08-05
Last modified: 2026-08-06

Vendor information

Vendor: Not stated
Product: Custom Fields

Score

10.0 Critical

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 47.6.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Path Traversal

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 1.5.1
Fixed
1.5.1

Scoring System

CVSS v4.0

Not available

CVSS v3.1

10.0 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Changed
Confidentiality	None
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).