CVE-2021-4380

Name: CVE-2021-4380
Creator: NVD / NIST
Published: 2023-06-07T13:15:09.623+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 4.53%

Last modified Jun 17, 2026

CVE-2021-4380 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 4.53% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

4.53%

90.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Valvepress	Pinterest Automatic Pin	< 4.14.4

References

https://blog.nintechnet.com/critical-vulnerability-fixed-in-wordpress-pinterest-automatic-plugin/Exploit, Third Party Advisory
https://wpscan.com/vulnerability/ffd344fd-de2c-4f27-8932-41aa0a3c3d05Third Party Advisory
https://www.acunetix.com/vulnerabilities/web/wordpress-plugin-pinterest-automatic-pin-security-bypass-4-14-3/Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/e4fdc902-4cfe-4116-a294-9a0fcb2de346?source=cveThird Party Advisory
https://blog.nintechnet.com/critical-vulnerability-fixed-in-wordpress-pinterest-automatic-plugin/Exploit, Third Party Advisory
https://wpscan.com/vulnerability/ffd344fd-de2c-4f27-8932-41aa0a3c3d05Third Party Advisory
https://www.acunetix.com/vulnerabilities/web/wordpress-plugin-pinterest-automatic-pin-security-bypass-4-14-3/Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/e4fdc902-4cfe-4116-a294-9a0fcb2de346?source=cveThird Party Advisory

Timeline

Published: Jun 7, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4380?

How severe is CVE-2021-4380?

CVE-2021-4380 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.53% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4380?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-4380?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST