Threat intelligence

GenerateBlocks <= 2.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Dynamic Tag Injection in HTML Attributes

CVE-2026-13458 · generateblocks

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

Vulnerability: GenerateBlocks <= 2.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Dynamic Tag Injection in HTML Attributes
Affected software: generateblocks(Plugin)
Affected versions: ≤ 2.3.0
Authentication: Authenticated (see advisory title)
Vulnerability type: Cross-site scripting
CVE: CVE-2026-13458
Published: 31 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 402e10b4-84f0-4f93-a85c-037876d26e58). Methodology and redistribution notes

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