CVE-2023-6621

Post SMTP < 2.8.7 - Reflected Cross-Site Scripting

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

POST SMTP WordPress plugin anterior a 2.8.7 no sanitiza ni escapa el parámetro msg antes de devolverlo a la página, lo que genera cross site scripting reflejado que podría usarse contra usuarios con privilegios elevados, como el administrador.

*Credits: Alex Sanford, WPScan

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-12-08 CVE Reserved
2024-01-03 CVE Published
2024-08-02 CVE Updated
2024-08-02 First Exploit
2025-02-04 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://wpscan.com/vulnerability/b49ca336-5bc2-4d72-a9a5-b8c020057928	2024-08-02

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Wpexperts Search vendor "Wpexperts"		Post Smtp Search vendor "Wpexperts" for product "Post Smtp"				< 2.8.7 Search vendor "Wpexperts" for product "Post Smtp" and version " < 2.8.7"		wordpress		Affected