The Post Flagger plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'flag' shortcode in all versions up to, and including, 1.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
History

Mon, 23 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 23 Mar 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Nosoycesaros
Nosoycesaros post Flagger
Wordpress
Wordpress wordpress
Vendors & Products Nosoycesaros
Nosoycesaros post Flagger
Wordpress
Wordpress wordpress

Sat, 21 Mar 2026 05:30:00 +0000

Type Values Removed Values Added
Description The Post Flagger plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'flag' shortcode in all versions up to, and including, 1.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Title Post Flagger <= 1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'slug' Shortcode Attribute
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published: 2026-03-21T03:26:35.624Z

Updated: 2026-03-23T16:39:35.801Z

Reserved: 2026-02-03T18:33:51.270Z

Link: CVE-2026-1854

cve-icon Vulnrichment

Updated: 2026-03-23T16:39:31.860Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-21T04:16:55.337

Modified: 2026-03-23T14:32:02.800

Link: CVE-2026-1854

cve-icon Redhat

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