CVE-2021-4380

Pinterest Automatic <= 4.14.3 - Unuathenticated Arbitrary Options Update

9.8 Critical

The Pinterest Automatic plugin for WordPress is vulnerable to authorization bypass due to missing capability checks on the 'wp_pinterest_automatic_parse_request' function and the 'process_form.php' script in versions up to, and including, 1.14.3. This makes it possible for unauthenticated attackers to update arbitrary options on a site that can be used to create new administrative user accounts or redirect unsuspecting site visitors.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

4.49%Up 4.4 points since Jun 8, 2023

What each source reports

CVE List Score used 9.8

Pinterest Automatic <= 4.14.3 - Unuathenticated Arbitrary Options Update

Record: CVE-2021-4380
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-284
Updated: 2026-11-02

EUVDEUVD-2021-34207 9.8

Record: EUVD-2021-34207
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-mmhw-42fh-v6gr 9.8

The Pinterest Automatic plugin for WordPress is vulnerable to authorization bypass due to missing...

Record: GHSA-mmhw-42fh-v6gr
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-284
Updated: 2026-11-02

NVD 9.8

Record: CVE-2021-4380
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-284
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Nuclei	Pinterest Automatic < 4.14.4 - Unauthenticated Arbitrary Options Update

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, Nuclei, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-4380 is a critical vulnerability (CVSS 9.8) in Valvepress Pinterest Automatic, published June 7, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.49%, the 91st percentile. No source names a fixed version.