Description
The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the delete_sticker function in all versions up to, and including, 2.15.19. This makes it possible for authenticated attackers, with administrator-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The prefix check intended to restrict deletion to the uploads directory can be bypassed by crafting a URL that begins with the legitimate uploads base URL but embeds ../ traversal sequences in the path portion, as the normalize_sticker function only applies esc_url_raw(), which does not strip ../ sequences, allowing the traversal payload to be stored verbatim in WordPress options.
References6
- plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15…
- plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15…
- plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15…
- plugins.trac.wordpress.org/browser/bp-better-messages/tags/2.15…
- plugins.trac.wordpress.org/changeset/3623636/bp-better-messages…
- www.wordfence.com/threat-intel/vulnerabilities/id/e9274957-7584…
Metrics
- CVSS 3.1
-
7.2
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 67 · as of 13 November 2026
- CWE
- CWE-22
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.