Accordion and Accordion Slider 1.4.6 - Injected Backdoor

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Summary

CVECVE-2026-6443
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-17 07:16:03 UTC
Updated2026-04-17 07:16:03 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000440000 probability, percentile 0.134210000 (date 2026-04-20)

Problem Types: CWE-506 | CWE-506 CWE-506 Embedded Malicious Code

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Essentialplugin Accordion And Accordion Slider affected 1.4.6 Not specified

References

ReferenceSourceLinkTags
www.wordfence.com/threat-intel/vulnerabilities/id/2597724a-9a39-4e46-b153-f4236... [email protected] www.wordfence.com
anchor.host/someone-bought-30-wordpress-plugins-and-planted-a-backdoor-in... [email protected] anchor.host
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Eu Joe Chegne (en)

CNA: Damien (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-16T18:38:10.000ZVendor Notified
CNA2026-04-09T00:00:00.000ZDisclosed
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