Threat intelligence

WP Meta SEO <= 4.5.18 - Unauthenticated Stored Cross-Site Scripting via REQUEST_URI in 404 Logging

CVE-2026-9643 · wp-meta-seo

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

Vulnerability: WP Meta SEO <= 4.5.18 - Unauthenticated Stored Cross-Site Scripting via REQUEST_URI in 404 Logging
Affected software: wp-meta-seo(Plugin)
Affected versions: ≤ 4.5.18
Authentication: Unauthenticated
Vulnerability type: Cross-site scripting
CVE: CVE-2026-9643
Published: 23 June 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 beceb218-34bf-4571-a07b-939abc7ead8e). Methodology and redistribution notes

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