Threat intelligence

Events Manager <= 7.4.0.1 - Reflected Cross-Site Scripting via 'header_format' Parameter

CVE-2026-17089 · events-manager

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

Vulnerability: Events Manager <= 7.4.0.1 - Reflected Cross-Site Scripting via 'header_format' Parameter
Affected software: events-manager(Plugin)
Affected versions: ≤ 7.4.0.1
Authentication: Not specified in feed title — see source advisory
Vulnerability type: Cross-site scripting
CVE: CVE-2026-17089
Published: 24 August 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 a56d1a9e-7564-41b0-af03-c272ffbbbb97). Methodology and redistribution notes

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