CVE-2026-66456 MEDIUM

CVE-2026-66456: WordPress Profile Extra Fields by BestWebSoft plugin <= 1.3.4 - Cross Site Scripting (XSS) vulnerability

Vendor Bestwebsoft

Product Profile Extra Fields by BestWebSoft

Weakness CWE-79 · XSS

Published August 13, 2026

Last update August 13, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Subscriber Cross Site Scripting (XSS) in Profile Extra Fields by BestWebSoft <= 1.3.4 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Profile Extra Fields by BestWebSoft versions up to 1.3.4 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts into profile fields. When other users view the affected profile, the scripts execute in their browsers, potentially compromising their sessions or stealing data. The vulnerability requires user interaction to trigger.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts into profile fields that execute when other users view the profile.

Potential impact on your site

04Site Impact

Authenticated users can inject scripts affecting other site visitors; session hijacking or data theft possible.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege user account and the victim must view the attacker's profile.

Key dates

06Disclosure timeline

August 13, 2026 CVE published

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-66456 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

Related vulnerabilities

Identifiers

CVE CVE-2026-66456

CWE CWE-79

CVSS 6.5 / MEDIUM

Affected versions