Noptin <= 3.8.7 - Authenticated (Administrator+) Stored Cross-Site Scripting

2025-06-12 00:00

kmaron1n

Strategic Overview

Status

Patched in 4.0.0

Affected PluginSimple Newsletter Plugin – Noptin

Affected Version<= 3.8.7

CVSS4.4Medium

CVECVE-2025-49871

View all Simple Newsletter Plugin – Noptin vulnerabilities

Vulnerability Overview

The Noptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.8.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only impacts multi-site installations and installations where unfiltered_html has been disabled.

Technical Analysis

REMEDIATION: Update to version 4.0.0, 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-2025-49871 https://www.wordfence.com/threat-intel/vulnerabilities/id/8546cd0b-2d6c-4428-81d5-ffd00540b823

CVSS Vector

4.4

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

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredHigh
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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