Easy Sign Up <= 3.4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

2023-04-06 00:00

István Márton

Strategic Overview

Status

Unpatched

Affected PluginEasy Sign Up

Affected Version<= 3.4.1

CVSS6.4Medium

CVECVE-2023-23701

View all Easy Sign Up vulnerabilities

Vulnerability Overview

The Easy Sign Up plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode in versions up to, and including, 3.4.1 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: 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-2023-23701 https://www.wordfence.com/threat-intel/vulnerabilities/id/af718d65-9f8f-4ed8-80ed-e7ed34169016

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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