What’s Vulnerable › Vulnerabilities

CVE-2019-6780

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-01-24 · updated 2026-06-17
• Weakness: CWE-601

Description

The Wise Chat plugin before 2.7 for WordPress mishandles external links because rendering/filters/post/WiseChatLinksPostFilter.php omits noopener and noreferrer.

Affected products

• Kainex Wise Chat: before 2.7 — fixed in 2.7

How to fix

Upgrade to a fixed version: Kainex Wise Chat 2.7. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/2016929/wise-chat/trunk/src/rendering/filters/post/WiseChatLinksPostFilter.php
• https://wordpress.org/plugins/wise-chat/#developers
• https://www.exploit-db.com/exploits/46247/
• https://plugins.trac.wordpress.org/changeset/2016929/wise-chat/trunk/src/rendering/filters/post/WiseChatLinksPostFilter.php
• https://wordpress.org/plugins/wise-chat/#developers
• https://www.exploit-db.com/exploits/46247/

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