How severe is CVE-2021-4350?

CVE-2021-4350 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2021-4350 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4350?

CVE-2021-4350 affects Najeebmedia Frontend File Manager Plugin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4350?

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-2021-4350 published?

CVE-2021-4350 was published on 2023-06-07 and last updated on 2026-06-17.

CVE-2021-4350

CVE-2021-4350 is a high-severity vulnerability in Najeebmedia Frontend File Manager Plugin with a CVSS 3.x base score of 7.2. 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-862.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Najeebmedia Frontend File Manager Plugin
Published: 2023-06-07
Last modified: 2026-06-17

Description

The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated HTML Injection in versions up to, and including, 18.2. This is due to lacking authentication protections on the wpfm_send_file_in_email AJAX action. This makes it possible for unauthenticated attackers to send emails using the site with a custom subject, recipient email, and body with unsanitized HTML content. This effectively lets the attacker use the site as a spam relay.

Frequently asked questions

What is CVE-2021-4350?: The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated HTML Injection in versions up to, and including, 18.2. This is due to lacking authentication protections on the wpfm_send_file_in_email AJAX action. This makes it possible for unauthenticated attackers to send emails using the site with a custom subject, recipient email, and body with unsanitized HTML content. This effectively lets the attacker use the site as a spam relay.
How severe is CVE-2021-4350?: CVE-2021-4350 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2021-4350 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4350?: CVE-2021-4350 affects Najeebmedia Frontend File Manager Plugin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4350?: 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-2021-4350 published?: CVE-2021-4350 was published on 2023-06-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:najeebmedia:frontend_file_manager_plugin:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Najeebmedia Frontend File Manager Plugin

CVE-2021-4368 — Critical (CVSS 9.9): The Frontend File Manager plugin for WordPress is vulnerable to Authenticated Settings Change in versions up to, and…
CVE-2021-4356 — Critical (CVSS 9.0): The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Download in versions…
CVE-2021-4365 — High (CVSS 7.2): The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Stored Cross-Site Scripting in versions…
CVE-2023-5105 — Medium (CVSS 6.5): The Frontend File Manager Plugin WordPress plugin before 22.6 has a vulnerability that allows an Editor+ user to bypass…
CVE-2021-4359 — Medium (CVSS 6.5): The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Arbitrary Post Deletion in versions up…
CVE-2021-4344 — Medium (CVSS 6.4): The Frontend File Manager plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including,…

All CVEs affecting Najeebmedia Frontend File Manager Plugin →

Other CWE-862 (Missing Authorization) vulnerabilities

CVE-2026-0092 — Critical (CVSS 10.0): In Package Manager, there is a possible device lock controller bypass due to a missing permission check. This could…
CVE-2026-33712 — Critical (CVSS 10.0): Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST…
CVE-2026-2031 — Critical (CVSS 10.0): An Improper Access Control vulnerability in several internal API endpoints for Google Cloud Application Integration…
CVE-2026-34976 — Critical (CVSS 10.0): Dgraph is an open source distributed GraphQL database. Prior to 25.3.1, the restoreTenant admin mutation is missing…
CVE-2025-30416 — Critical (CVSS 10.0): Sensitive data disclosure and manipulation due to missing authorization. The following products are affected: Acronis…
CVE-2025-45854 — Critical (CVSS 10.0): /server/executeExec of JEHC-BPM 2.0.1 allows attackers to execute arbitrary code via execParams.

Browse all CWE-862 (Missing Authorization) vulnerabilities →