The Accordion and Accordion Slider plugin for WordPress is vulnerable to an injected backdoor in version 1.4.6. This is due to the plugin being sold to a malicious threat actor that embedded a backdoor in all of the plugin's they acquired. This makes it possible for the threat actor to maintain a persistent backdoor and inject spam into the affected sites.

References

• https://nvd.nist.gov/vuln/detail/CVE-2026-6443
• https://anchor.host/someone-bought-30-wordpress-plugins-and-planted-a-backdoor-in-all-of-them
• https://www.wordfence.com/threat-intel/vulnerabilities/id/2597724a-9a39-4e46-b153-f42366f833ba?source=cve