Threat intelligence

Proxy & VPN Blocker <= 3.5.8 - Unauthenticated Stored Cross-Site Scripting

CVE-2026-57399 · proxy-vpn-blocker

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Proxy Vpn Blocker at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Proxy & VPN Blocker <= 3.5.8 - Unauthenticated Stored Cross-Site Scripting
Affected software: proxy-vpn-blocker(Plugin)
Affected versions: ≤ 3.5.8
Authentication: Unauthenticated
Vulnerability type: Cross-site scripting
CVE: CVE-2026-57399
Published: 8 July 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory b034605b-284c-478a-baec-224c4533b2e0). Methodology and redistribution notes

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