VDB-358030 · CVE-2026-6443 · GCVE-0-2026-6443

essentialplugin Accordion and Accordion Slider Plugin 1.4.6 on WordPress malicious code

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.4	$0-$5k	4.92

Summaryinfo

A vulnerability categorized as critical has been discovered in essentialplugin Accordion and Accordion Slider Plugin 1.4.6 on WordPress. This affects an unknown part. Executing a manipulation can lead to malicious code. This vulnerability is registered as CVE-2026-6443. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in essentialplugin Accordion and Accordion Slider Plugin 1.4.6 on WordPress. This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a malicious code vulnerability. The CWE definition for the vulnerability is CWE-506. The product contains code that appears to be malicious in nature. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published by Eu Joe Chegne and Damien. The advisory is available at wordfence.com. This vulnerability was named CVE-2026-6443 since 04/16/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/17/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

WordPress Plugin

Vendor

essentialplugin

Name

Accordion and Accordion Slider Plugin

Version

1.4.6

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (Wordfence): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Malicious code
CWE: CWE-506
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/16/2026 CVE reserved
04/17/2026 +1 days Advisory disclosed
04/17/2026 +0 days VulDB entry created
04/17/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: wordfence.com
Researcher: Eu Joe Chegne, Damien
Status: Not defined

CVE: CVE-2026-6443 (🔒)
GCVE (CVE): GCVE-0-2026-6443
GCVE (VulDB): GCVE-100-358030

Entryinfo

Created: 04/17/2026 09:07
Changes: 04/17/2026 09:07 (63)
Complete: 🔍
Cache ID: 216::103