SB2020051510 - Stored cross-site scripting in Login/Signup Popup plugin for WordPress

Description

This security bulletin contains information about 1 vulnerability.

1) Stored cross-site scripting (CVE-ID: N/A)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:A/U:Green

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote authenticated attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Note: The vulnerability is being actively exploited in the wild.

Remediation

Install update from vendor's website.

References

• https://wpvulndb.com/vulnerabilities/10225/
• https://blog.nintechnet.com/zero-day-vulnerability-fixed-in-wordpress-login-signup-popup-plugin/