CVE-2020-8658

Name: CVE-2020-8658
Creator: NVD / NIST
Published: 2020-02-06T03:15:10.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 9.92%

Last modified Jun 17, 2026

CVE-2020-8658 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The BestWebSoft Htaccess plugin through 1.8.1 for WordPress allows wp-admin/admin.php?page=htaccess.php&action=htaccess_editor CSRF. The flag htccss_nonce_name passes the nonce to WordPress but the plugin does not validate it correctly, resulting in a wrong implementation of anti-CSRF protection. EPSS estimates a 9.92% chance of exploitation in the next 30 days.

Description

The BestWebSoft Htaccess plugin through 1.8.1 for WordPress allows wp-admin/admin.php?page=htaccess.php&action=htaccess_editor CSRF. The flag htccss_nonce_name passes the nonce to WordPress but the plugin does not validate it correctly, resulting in a wrong implementation of anti-CSRF protection. In this way, an attacker is able to direct the victim to a malicious web page that modifies the .htaccess file, and takes control of the website.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

9.92%

95.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Bestwebsoft	Htaccess	<= 1.8.1

References

https://github.com/V1n1v131r4/Exploiting-WP-Htaccess-by-BestWebSoft-Plugin/blob/master/README.mdExploit, Third Party Advisory
https://wordpress.org/plugins/htaccess/#developersThird Party Advisory
https://wpvulndb.com/vulnerabilities/10060Third Party Advisory
https://github.com/V1n1v131r4/Exploiting-WP-Htaccess-by-BestWebSoft-Plugin/blob/master/README.mdExploit, Third Party Advisory
https://wordpress.org/plugins/htaccess/#developersThird Party Advisory
https://wpvulndb.com/vulnerabilities/10060Third Party Advisory

Timeline

Published: Feb 6, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8658?

How severe is CVE-2020-8658?

CVE-2020-8658 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 9.92% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8658?

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-2020-8658?

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

Scan your code now

Source: NVD / NIST