User Submitted Posts <= 20230901 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

2023-09-06 00:00

Ngô Thiên An (ancorn_)

Strategic Overview

Status

Patched in 20230902

Affected PluginUser Submitted Posts – Enable Users to Submit Posts from the Front End

Affected Version<= 20230901

CVSS6.4Medium

CVECVE-2023-7251

View all User Submitted Posts – Enable Users to Submit Posts from the Front End vulnerabilities

Vulnerability Overview

The User Submitted Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcodes in versions up to, and including, 20230901 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

REMEDIATION: Update to version 20230902, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2023-7251 https://www.wordfence.com/threat-intel/vulnerabilities/id/b7fca965-86f8-4ee4-a9d6-cb18fe5f098e

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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