Simple post listing <= 0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

2025-12-11 14:30

Peter Thaleikis

Strategic Overview

Status

Unpatched

Affected PluginSimple post listing

Affected Version<= 0.2

CVSS6.4Medium

CVECVE-2025-12650

View all Simple post listing vulnerabilities

Vulnerability Overview

The Simple post listing plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class_name' parameter in the postlist shortcode in all versions up to, and including, 0.2. This is due to insufficient input sanitization and output escaping on user-supplied attributes. 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 via mouse interaction.

Technical Analysis

REMEDIATION: No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement. --- 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-2025-12650 https://www.wordfence.com/threat-intel/vulnerabilities/id/dfdebeab-89f6-49b8-a38f-de2a8df7a7e8

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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