High severity · published Oct 6, 2026
CVE-2026-39730
WordPress Wise Chat plugin <= 3.4.3 - Broken Access Control vulnerability
7.1
CVSS
0.3%
EPSS
No
On KEV
Description
Missing Authorization vulnerability in Marcin Wise Chat wise-chat allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Wise Chat: from n/a through 3.4.3.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WC
Wise Chat · Marcin
through 3.4.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-39730
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-39730
vdb-entry
https://patchstack.com/database/wordpress/plugin/wise-chat/vulnerability/wordpress-wise-chat-plugin-3-4-1-broken-access-control-vulnerability?_s_id=cve
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