How severe is CVE-2021-4354?

CVE-2021-4354 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-4354 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4354?

CVE-2021-4354 affects Magazine3 Pwa For Wp & Amp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4354?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-4354 published?

CVE-2021-4354 was published on 2023-06-07 and last updated on 2026-06-17.

CVE-2021-4354

CVE-2021-4354 is a high-severity vulnerability in Magazine3 Pwa For Wp & Amp with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Magazine3 Pwa For Wp & Amp
Published: 2023-06-07
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-4354?: 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.
How severe is CVE-2021-4354?: CVE-2021-4354 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-4354 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4354?: CVE-2021-4354 affects Magazine3 Pwa For Wp & Amp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4354?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-4354 published?: CVE-2021-4354 was published on 2023-06-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:magazine3:pwa_for_wp_\&_amp:*:*:*:*:*:wordpress:*:*

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