CVE Catalog

CVE-2026-57399

HighCVSS 7.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.25%

16th percentile - higher than 16% of all known CVEs

Summary

The Proxy & VPN Blocker WordPress plugin contains a Stored Cross-Site Scripting (XSS) vulnerability due to improper input neutralization during web page generation. This affects versions up to and including 3.5.8.

Risk Assessment

An attacker can inject a malicious script that executes in the browsers of administrators or users, potentially leading to session theft, account takeover, or website defacement.

Recommendation

Immediately update the Proxy & VPN Blocker plugin to the latest available version that fixes this vulnerability. If no update is available, consider temporarily disabling the plugin.

Related vulnerabilities

Original NVD description (English source)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Proxy &amp; VPN Blocker Proxy &amp; VPN Blocker proxy-vpn-blocker allows Stored XSS.This issue affects Proxy &amp; VPN Blocker: from n/a through <= 3.5.8.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS