CVE-2023-7027 json
POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress <= 2.8.7 - Unauthenticated Stored Cross-Site Scripting via device
published 2024-01-03 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-59218
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘device’ header in all versions up to, and including, 2.8.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Patch / fix
- wpexperts post_smtp 2.8.8
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction
0.94% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/post-smtp/trunk/Postman/Mobile/includes/rest-api/v1/rest-api.php#L79 referenced PoC, tagged "exploit" by a source, unverified
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/post-smtp/trunk/Postman/Mobile/mobile.php#L219 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected products
- saadiqbal Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
plugins.trac.wordpress.org
/changeset?sfp_email=&sfph_mail=&reponame=&new=3016126%40post-smtp%2Ftrunk&old=3012318%40post-smtp%2Ftrunk&sfp
patch
-
plugins.trac.wordpress.org
/browser/post-smtp/trunk/Postman/Mobile/includes/rest-api/v1/rest-api.php#L79
exploit
-
plugins.trac.wordpress.org
/browser/post-smtp/trunk/Postman/Mobile/mobile.php#L219
exploit
-
wordfence.com
/threat-intel/vulnerabilities/id/7e8911a3-ce0f-420c-bf2a-1c2929d01cef?source=cve
third-party-advisory
-
packetstormsecurity.com
/files/176525/WordPress-POST-SMTP-Mailer-2.8.7-Authorization-Bypass-Cross-Site-Scripting.html
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2023-7027
- NVD CVE-2023-7027
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.