PT-2025-18741 · WordPress · Kiwichat Nextclient

Peter Thaleikis · Published 2025-05-02 · Updated 2025-05-02 · CVE-2025-3670

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions KiwiChat NextClient plugin for WordPress versions up to, and including, 6.2

Description The issue is related to Stored Cross-Site Scripting via the url parameter due to insufficient input sanitization and output escaping. This allows 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.

Recommendations For versions up to, and including, 6.2, update to a version that includes proper input sanitization and output escaping for the url parameter to prevent Stored Cross-Site Scripting attacks. As a temporary workaround, consider restricting access to the url parameter in the affected plugin until a patch is available.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-3670

Affected Products

Kiwichat Nextclient

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2025-3670 · Security Note
• https://plugins.trac.wordpress.org/browser/kiwichat/trunk/public/index.php#L25 · Note
• https://t.me/cvedetector/24328 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1918157643715104979 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/fd6f6a2c-59d3-4091-82ac-0edf9f47ef65?source=cve · Note
• https://t.me/cvetracker/22901 · Telegram Post
• https://wordpress.org/plugins/kiwichat/#developers · Note
• https://twitter.com/CVEnew/status/1918181331231731837 · Twitter Post
• https://t.me/cvenotify/120593 · Telegram Post