Threat intelligence

ImproveSEO <= 2.0.11 - Unauthenticated Arbitrary File Upload

CVE-2026-16618 · improveseo

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

Vulnerability: ImproveSEO <= 2.0.11 - Unauthenticated Arbitrary File Upload
Affected software: improveseo(Plugin)
Affected versions: ≤ 2.0.11
Authentication: Unauthenticated
Vulnerability type: Remote code execution
CVE: CVE-2026-16618
Published: 24 July 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run arbitrary code on the server if exploited.
Source: Data imported from Wordfence Intelligence (advisory 4d438635-db41-4b7a-a57f-eb2f746ad2e1). Methodology and redistribution notes

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