CVE-2023-6875

criticalpriority · act · 81OT risk · criticalEPSS 0.903 · 100 %ileexploit · functionalEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

4 exploits · functional

Likely / severe?

90.3% (100th) EPSS

CVSS 9.8 · critical

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-22

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.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · security@wordfence.comexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-639USCWE-862USCWE-862US

exploits (4)

Public proof-of-concept and weaponised exploit code.

auxiliary/admin/http/wp_post_smtp_acct_takeoverWordpress POST SMTP Account Takeoverfunctional · metasploit
UlyssesSaicha/CVE-2023-6875CVE-2023-6875 PoCPoC · poc_in_github
gbrsh/CVE-2023-6875Exploit for CVE-2023-6875 - Unauthorized Account Takeover. PoC · poc_in_github
hatlesswizard/CVE-2023-6875CVE-2023-6875 exploit written for Xakep.RuPoC · poc_in_github

affected products (3)

Products and version ranges known to be affected.

saadiqbal Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App≤ 0 ≤2.8.7enisa_euvdEU
WordPress Foundation POST SMTP Mailer≤ 2.8.7fstec_bduRU
wpexperts post smtp≤ 2.8.7nvdUScpe:2.3:a:wpexperts:post_smtp:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2024-01-11modified 2026-06-17

references (13)

External citations — patches, advisories, analysis.

scry

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