CVE-2021-4354 - CVE House

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Status published High CVE-2021-4354

PWA for WP & AMP <= 1.7.32 - Arbitrary File Upload

8.8 CVSS

Vulnerability Description

The PWA for WP & AMP for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the pwaforwp_splashscreen_uploader function in versions up to, and including, 1.7.32. This makes it possible for authenticated attackers to upload arbitrary files on the affected sites server which may make remote code execution possible.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Jerome Bruandet

References

More from magazine3

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Schema & Structured Data for WP & AMP <= 1.54 - Authenticated (Contributor+) Stored Cross-Site Scripting via User Custom Schema

Easy Table of Contents <= 2.0.78 - Authenticated (Contributor+) Stored Cross-Site Scripting

Schema & Structured Data for WP & AMP <= 1.51 - Authenticated (Contributor+) Stored Cross-Site Scripting

Schema & Structured Data for WP & AMP <= 1.33 - Authenticated (Contributor+) Stored Cross-Site Scripting via url Attribute

Schema & Structured Data for WP & AMP <= 1.29 - Authenticated (Contributor+) Stored Cross-Site Scripting via How To and FAQ Blocks

Affected Vendor

magazine3

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Affected Software

PWA for WP – Progressive Web Apps Made Simple

Vulnerable Versions:

0

Timeline

Official Publish: June 7th, 2023

Last Modified: April 8th, 2026

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1505.003 Web Shell

T1105 Ingress Tool Transfer

Command and Control

T1059 Command and Scripting Interpreter

T1565.002 Stored Data Manipulation