CVE-2023-29429Network attack vector

Unauthenticated email sending via unchecked AJAX handler

Published Dec 9, 2024 · Updated Apr 28, 2026

Missing authorization in WPEverest User Registration 2.3.2.1 and earlier allows remote attackers to send a test email. The send_test_email AJAX handler invokes WordPress mail delivery without checking a user capability before processing the request. Unauthenticated network access to the WordPress AJAX endpoint is sufficient; the bounded result is unauthorized outbound email from the site.

CVSS severity5.3
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authorization in WPEverest User Registration 2.3.2.1 and earlier allows remote attackers to send a test email. The send_test_email AJAX handler invokes WordPress mail delivery without checking a user capability before processing the request. Unauthenticated network access to the WordPress AJAX endpoint is sufficient; the bounded result is unauthorized outbound email from the site.

The record

CVE
CVE-2023-29429
Published
Dec 9, 2024
Updated
Apr 28, 2026
Vendor
WPEverest
Product
User Registration & Membership
Classifications
CWE-862, CAPEC-180
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.3.2.1
  2. Affected versionversion=n/a <=2.3.2.1 changes=[{"at":"2.3.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPEverest · User Registration & Membershipversion=0 <=2.3.2.1; version=n/a <=2.3.2.1 changes=[{"at":"2.3.3","status":"unaffected"}]

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.3PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo