Threat intelligence

Post Grid Gutenberg Blocks for News, Magazines, Blog Websites <= 5.0.31 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'moreResultsText' Block Attribute

CVE-2026-13253 · ultimate-post

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

Vulnerability: Post Grid Gutenberg Blocks for News, Magazines, Blog Websites <= 5.0.31 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'moreResultsText' Block Attribute
Affected software: ultimate-post(Plugin)
Affected versions: ≤ 5.0.31
Authentication: Authenticated (see advisory title)
Vulnerability type: Cross-site scripting
CVE: CVE-2026-13253
Published: 8 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 070ccd70-22c3-47f1-9dce-a884bff9ea76). Methodology and redistribution notes

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