PT-2026-36954 · WordPress · Schedule Post Changes With Publishpress

Djaidja Moundjid · Published 2026-05-05 · Updated 2026-05-05 · CVE-2026-5247

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Schedule Post Changes With PublishPress Future versions prior to 4.10.1

Description Stored Cross-Site Scripting occurs due to insufficient input sanitization of the wrapper attribute within the [futureaction] shortcode. The plugin utilizes the esc html() function, which encodes HTML entities but fails to prevent attribute injection when the value is used as an HTML tag name in a sprintf() call. This allows authenticated attackers with administrator-level access, or contributors if granted permission, to inject event handler attributes via spaces in the wrapper value. Consequently, arbitrary web scripts can be injected into pages and executed when a user accesses them.

Recommendations Update to a version later than 4.10.0. As a temporary workaround, restrict the use of the wrapper attribute in the [futureaction] shortcode to trusted administrators only.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-5247

Affected Products

Schedule Post Changes With Publishpress

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-5247 · Security Note
• https://github.com/publishpress/publishpress-future/releases · Note
• https://plugins.trac.wordpress.org/browser/post-expirator/tags/4.9.4/src/Modules/Expirator/Controllers/ShortcodeController.php#L173 · Note
• https://twitter.com/CVEarity/status/2051584428640788867 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/9acf80aa-8354-4430-9836-18fa17854521?source=cve · Note
• https://t.me/CVEtracker/52696 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2051611001154384141 · Twitter Post
• https://plugins.trac.wordpress.org/browser/post-expirator/trunk/src/Modules/Expirator/Controllers/ShortcodeController.php#L173 · Note