CVE-2021-34658 - Vulnerability Details - OpenCVE

The Simple Popup Newsletter WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to the use of $_SERVER['PHP_SELF'] in the ~/simple-popup-newsletter.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.4.7.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.0021.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Keszites	Simple Popup Newsletter

Configuration 1 [-]

cpe:2.3:a:keszites:simple_popup_newsletter:*:*:*:*:*:wordpress:*:*

No data.

No data.

Fixes

Solution

Uninstall the plugin

Workaround

No workaround given by the vendor.

References

Link	Providers
https://plugins.trac.wordpress.org/browser/simple-popup-newsletter/trunk/simple-popup-newsletter.php#L319
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34658

History

Fri, 23 May 2025 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: Wordfence

Published: 2021-08-16T18:22:38.268Z

Updated: 2025-05-23T20:02:51.976Z

Reserved: 2021-06-10T00:00:00.000Z

Link: CVE-2021-34658

Vulnrichment

Updated: 2024-08-04T00:19:47.809Z

NVD

Status : Modified

Published: 2021-08-16T19:15:15.227

Modified: 2024-11-21T06:10:54.710

Link: CVE-2021-34658

Redhat

No data.

OpenCVE Enrichment

No data.

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