CVE-2026-6443: CWE-506 Embedded Malicious Code in essentialplugin Accordion and Accordion Slider
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.
AI Analysis
Technical Summary
CVE-2026-6443 identifies a critical vulnerability in the Accordion and Accordion Slider plugins for WordPress, specifically version 1.4.6. The issue arises because the plugin was sold to a malicious threat actor who embedded a backdoor within the plugin code. This backdoor enables persistent unauthorized access and the ability to inject spam content into compromised sites. The vulnerability is categorized as CWE-506, indicating embedded malicious code. The CVSS 3.1 base score is 9.8, reflecting network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability. No patch or official remediation level has been published, and the affected product is not a cloud service.
Potential Impact
Successful exploitation allows the attacker to maintain persistent backdoor access to affected WordPress sites running the vulnerable plugin version 1.4.6. This can lead to unauthorized control, spam injection, and potentially further compromise of site integrity and availability. The critical CVSS score of 9.8 indicates severe impact on confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, it is recommended to remove or disable the vulnerable Accordion and Accordion Slider plugin version 1.4.6 from WordPress installations. Monitor for suspicious activity related to backdoor access or spam injection. Avoid using this plugin version and consider alternative plugins from trusted sources.
CVE-2026-6443: CWE-506 Embedded Malicious Code in essentialplugin Accordion and Accordion Slider
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6443 identifies a critical vulnerability in the Accordion and Accordion Slider plugins for WordPress, specifically version 1.4.6. The issue arises because the plugin was sold to a malicious threat actor who embedded a backdoor within the plugin code. This backdoor enables persistent unauthorized access and the ability to inject spam content into compromised sites. The vulnerability is categorized as CWE-506, indicating embedded malicious code. The CVSS 3.1 base score is 9.8, reflecting network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability. No patch or official remediation level has been published, and the affected product is not a cloud service.
Potential Impact
Successful exploitation allows the attacker to maintain persistent backdoor access to affected WordPress sites running the vulnerable plugin version 1.4.6. This can lead to unauthorized control, spam injection, and potentially further compromise of site integrity and availability. The critical CVSS score of 9.8 indicates severe impact on confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, it is recommended to remove or disable the vulnerable Accordion and Accordion Slider plugin version 1.4.6 from WordPress installations. Monitor for suspicious activity related to backdoor access or spam injection. Avoid using this plugin version and consider alternative plugins from trusted sources.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-04-16T18:22:16.366Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e1dae182d89c981f9ddcd4
Added to database: 4/17/2026, 7:01:53 AM
Last enriched: 4/17/2026, 7:16:51 AM
Last updated: 4/21/2026, 8:22:48 AM
Views: 56
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