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CVE-2023-6621

Post SMTP < 2.8.7 - Reflected Cross-Site Scripting

Published: Jan 3, 2024Updated: Jun 18, 2025 Sources: CVE List NVDCWE-79
6.1MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 67.1%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available
Self-Check
OpenVAS

Description

The POST SMTP WordPress plugin before 2.8.7 does not sanitise and escape the msg parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

wpexperts
commercialaka wp multi store locator, wpexperts wp plugins, post smtp, mycred
post smtpOn-prem
Web & CMS Plugins / wordpress-plugin
and 1 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://wpscan.com/vulnerability/b49ca336-5bc2-4d72-a9a5-b8c020057928
wpscan.com

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