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CVE-2026-16585— Better Messages <= 2.15.19 - Authenticated (Administrator+) Arbitrary File Deletion via Path Traversal via 'file' Parameter

Quick assessment

Affected
wordplus Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Better Messages是WordPress基金会开源的一款消息聊天插件。 WordPress Better Messages 2.15.19及之前版本存在路径遍历漏洞，该漏洞源于delete_sticker函数中文件路径验证不足，可能导致经过身份验证的攻击者（管理员权限及以上）删除服务器上的任意文件，从而导致远程代码执行。

CVSS 7.2 · High EPSS 1.15% · P66

Affected Version Matrix 1

VendorProduct Version RangeStatus
wordplus Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots ≤ 2.15.19 affected
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I. Basic Information for CVE-2026-16585

Vulnerability Information
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Vulnerability Title
Better Messages <= 2.15.19 - Authenticated (Administrator+) Arbitrary File Deletion via Path Traversal via 'file' Parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Better Messages 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Better Messages是WordPress基金会开源的一款消息聊天插件。 WordPress Better Messages 2.15.19及之前版本存在路径遍历漏洞，该漏洞源于delete_sticker函数中文件路径验证不足，可能导致经过身份验证的攻击者（管理员权限及以上）删除服务器上的任意文件，从而导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wordplus Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots 0 ~ 2.15.19 -

II. Public POCs for CVE-2026-16585

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III. Intelligence Information for CVE-2026-16585

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Patches & Fixes for CVE-2026-16585 (3)

Vendor Advisories for CVE-2026-16585 (1)

Vendor Pages for CVE-2026-16585 (1)

IV. Related Vulnerabilities

Same product: Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
Same vendor: wordplus
Same weakness: CWE-22

V. Comments for CVE-2026-16585

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