Vulnerability Monitor

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CVE-2023-6875

The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to unauthorized access of data and modification of data due to a type juggling issue on the connect-app REST endpoint in all versions up to, and including, 2.8.7. This makes it possible for unauthenticated attackers to reset the API key used to authenticate to the mailer and view logs, including password reset emails, allowing site takeover. CVE-2023-52233 appears to be a duplicate of this issue.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from wpexperts organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2024, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2024-01-11T09:15:52.773

Last Modified

2026-04-08T19:19:01.300

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

Weaknesses

Type: Primary
CWE-639
Type: Secondary
CWE-862
Type: Secondary
CWE-862

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	wpexperts	post_smtp	≤ 2.8.7	Yes

References

https://plugins.trac.wordpress.org/browser/post-smtp/trunk/Postman/Mobile/includes/rest-api/v1/rest-api.php#L60 Issue Tracking ([email protected])
https://plugins.trac.wordpress.org/changeset/3016051/post-smtp/trunk?contextall=1&old=3012318&old_path=%2Fpost-smtp%2Ftrunk Product ([email protected])
https://www.wordfence.com/threat-intel/vulnerabilities/id/e675d64c-cbb8-4f24-9b6f-2597a97b49af?source=cve Third Party Advisory ([email protected])
http://packetstormsecurity.com/files/176525/WordPress-POST-SMTP-Mailer-2.8.7-Authorization-Bypass-Cross-Site-Scripting.html Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://plugins.trac.wordpress.org/browser/post-smtp/trunk/Postman/Mobile/includes/rest-api/v1/rest-api.php#L60 Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)
https://plugins.trac.wordpress.org/changeset/3016051/post-smtp/trunk?contextall=1&old=3012318&old_path=%2Fpost-smtp%2Ftrunk Product (af854a3a-2127-422b-91ae-364da2661108)
https://www.wordfence.com/threat-intel/vulnerabilities/id/e675d64c-cbb8-4f24-9b6f-2597a97b49af?source=cve Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For wpexperts's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.