Threat intelligence

Taskbuilder <= 5.0.3 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Block Emails' Field

CVE-2026-2289 · taskbuilder

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

Vulnerability: Taskbuilder <= 5.0.3 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Block Emails' Field
Affected software: taskbuilder(Plugin)
Affected versions: ≤ 5.0.3
Authentication: Authenticated (see advisory title)
Vulnerability type: Cross-site scripting
CVE: CVE-2026-2289
Published: 3 March 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 81e26924-c9eb-4ddf-89e3-a8bf95d23b78). Methodology and redistribution notes

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