CVE-2023-2877

Name: CVE-2023-2877
Creator: NVD / NIST
Published: 2023-06-27T14:15:11.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 22.27%

Last modified Jun 17, 2026

CVE-2023-2877 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The Formidable Forms WordPress plugin before 6.3.1 does not adequately authorize the user or validate the plugin URL in its functionality for installing add-ons. This allows a user with a role as low as Subscriber to install and activate arbitrary plugins of arbitrary versions from the WordPress.org plugin repository onto the site, leading to Remote Code Execution.. EPSS estimates a 22.27% chance of exploitation in the next 30 days.

Description

The Formidable Forms WordPress plugin before 6.3.1 does not adequately authorize the user or validate the plugin URL in its functionality for installing add-ons. This allows a user with a role as low as Subscriber to install and activate arbitrary plugins of arbitrary versions from the WordPress.org plugin repository onto the site, leading to Remote Code Execution.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

22.27%

97.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Strategy11	Formidable Forms	< 6.3.1

References

https://wpscan.com/vulnerability/33765da5-c56e-42c1-83dd-fcaad976b402Exploit, Third Party Advisory
https://wpscan.com/vulnerability/33765da5-c56e-42c1-83dd-fcaad976b402Exploit, Third Party Advisory

Timeline

Published: Jun 27, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-2877?

How severe is CVE-2023-2877?

CVE-2023-2877 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 22.27% probability of exploitation in the next 30 days.

How do I fix CVE-2023-2877?

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-2023-2877?

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

Scan your code now

Source: NVD / NIST