CVE•Published 2023-06-07•Modified 2026-04-08•1 article on news•6 live references•NVD data

CVE-2021-4354Magazine3 · Pwa_for_wp_\&_amp

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 8% of all CVEs

Weaknesses (CWE)

CWE-434Unrestricted Upload of File with Dangerous Type

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.

Timeline

Published 2023-06-07

Modified 2026-04-08

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2021-4354

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · WP plugin path

http.html:"/wp-content/plugins/pwa-for-wp-\&-amp/"

Matches any site loading the "pwa-for-wp-\&-amp" plugin — doesn't rely on Shodan's vuln tag.

Shodan · product

product:"Magazine3 Pwa For Wp \& Amp"

All exposed Magazine3 Pwa For Wp \& Amp instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Pwa For Wp \& Amp"

HTTP body or banner mentions "Pwa For Wp \& Amp" — catches deploys Shodan didn't identify as a product.