wpeverest Everest Forms Plugin up to 3.4.7 on WordPress Email Sending send_test_email authorization

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in wpeverest Everest Forms Plugin up to 3.4.7 on WordPress and classified as critical. Affected is the function send_test_email of the component Email Sending Handler. The manipulation results in authorization. This vulnerability is reported as CVE-2026-4888. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in wpeverest Everest Forms Plugin up to 3.4.7 on WordPress. Affected is the function send_test_email of the component Email Sending Handler. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder plugin for WordPress is vulnerable to unauthorized email sending due to a missing capability check on the send_test_email() function in all versions up to, and including, 3.4.7. This makes it possible for authenticated attackers, with Subscriber-level access and above, to send test emails to arbitrary addresses from the server.

The weakness was disclosed by Quốc Huy. The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-4888 since 03/26/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available.

Upgrading to version 3.4.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CNNVD (CNNVD-202605-6652). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.3
CNA Vector (Wordfence): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Everest Forms Plugin 3.4.4

Timelineinfo

03/26/2026 CVE reserved
05/28/2026 +62 days Advisory disclosed
05/28/2026 +0 days VulDB entry created
05/31/2026 +3 days VulDB entry last update

Sourcesinfo

Advisory: wordfence.com
Researcher: Quốc Huy
Status: Confirmed

CVE: CVE-2026-4888 (🔒)
GCVE (CVE): GCVE-0-2026-4888
GCVE (VulDB): GCVE-100-366552
CNNVD: CNNVD-202605-6652 - WordPress plugin Everest Forms 安全漏洞

Entryinfo

Created: 05/28/2026 05:26
Updated: 05/31/2026 19:30
Changes: 05/28/2026 05:26 (67), 05/29/2026 21:30 (6), 05/30/2026 19:04 (1), 05/31/2026 19:30 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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