CVE-2023-6875

9.8 CRITICAL 90% exploit odds Drop everything No fix listed Auth & access Web app

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 90.3% chance of exploitation in the next 30 days (EPSS). Higher than most.
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2023-12-15 18:36 UTC ReservedThe CVE id was reserved by its CNA
2024-01-11 09:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 06:51 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 90.3% in the next 30 days (EPSS).
Severity: 9.8 CRITICAL (CVSS).
Fix: none linked yet, which raises it.
It meets the bar for Drop everything: critical, and exploited or very likely to be.

Details

Published: 2024-01-11 09:15 UTC
Last modified: 2026-06-17 06:51 UTC
Exploit probability: 90.3% · EPSS, next 30 days
Weakness: CWE-639 · Insecure direct object reference
Record status: Modified

Affected

Wpexperts Post Smtp ≤ 2.8.7

Attack profile CVSS 3.1 · 9.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-6875.md and follow it. Check whether this project is affected by CVE-2023-6875. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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References

NVD record · CVE.org record