CVE-2021-4354 PWA for WP & AMP <= 1.7.32 - Arbitrary File Upload

Q: What is CVE-2021-4354?

CVE-2021-4354 is a high-severity vulnerability in magazine3 PWA for WP – Progressive Web Apps Made Simple, published on 7 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Q: Is CVE-2021-4354 being exploited?

There is no known exploitation of CVE-2021-4354 in the wild and no public exploit code.

Q: How do I fix CVE-2021-4354?

No fix has been published for CVE-2021-4354 yet. Limit exposure of the affected software until one is available.

High 8.8 Published 7 Jun 2023 Updated 8 Apr 2026

Authenticated attackers can upload arbitrary files via missing validation, potentially leading to remote code execution on WordPress sites.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-4354?

CVE-2021-4354 is a high-severity vulnerability in magazine3 PWA for WP – Progressive Web Apps Made Simple, published on 7 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-434

Which versions are affected by CVE-2021-4354?

It affects 1 product.

Products include Magazine3 Pwa for Wp \& Amp.

How do I fix CVE-2021-4354?

No fix has been published for CVE-2021-4354 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-4354 being exploited?

There is no known exploitation of CVE-2021-4354 in the wild and no public exploit code.

Sources

Also known as GHSA-w75r-hmw9-3gxm.