HOMEVULNERABILITIESCVE-2021-4369
MEDIUM

CVE-2021-4369

CWE-862Published: June 7, 2023· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official Description

The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Content Injection in versions up to, and including, 18.2. This is due to lacking authorization protections, checks against users editing other's posts, and lacking a security nonce, all on the wpfm_edit_file_title_desc AJAX action. This makes it possible for unauthenticated attackers to edit the content and title of every page on the site.

NVD Source

Technical Analysis

CVE-2021-4369 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected Vendors & Products

najeebmedia1 product(s)
frontend file manager plugin
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2554359%40nmedia-user-file-uploader&new=2554359%40nmedia-user-file-uploader&sfp_email=&sfph_mail=
PATCHhttps://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2554359%40nmedia-user-file-uploader&new=2554359%40nmedia-user-file-uploader&sfp_email=&sfph_mail=
ADVISORYhttps://www.wordfence.com/threat-intel/vulnerabilities/id/c434e6b8-0dd5-4ffe-93b1-1af614c08f85?source=cve
ADVISORYhttps://www.wordfence.com/threat-intel/vulnerabilities/id/c434e6b8-0dd5-4ffe-93b1-1af614c08f85?source=cve

All References (6)

→
https://blog.nintechnet.com/wordpress-frontend-file-manager-plugin-fixed-multiple-critical-vulnerabilities/Exploit
→
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2554359%40nmedia-user-file-uploader&new=2554359%40nmedia-user-file-uploader&sfp_email=&sfph_mail=Patch
→
https://www.wordfence.com/threat-intel/vulnerabilities/id/c434e6b8-0dd5-4ffe-93b1-1af614c08f85?source=cveThird Party Advisory
→
https://blog.nintechnet.com/wordpress-frontend-file-manager-plugin-fixed-multiple-critical-vulnerabilities/Exploit
→
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2554359%40nmedia-user-file-uploader&new=2554359%40nmedia-user-file-uploader&sfp_email=&sfph_mail=Patch
→
https://www.wordfence.com/threat-intel/vulnerabilities/id/c434e6b8-0dd5-4ffe-93b1-1af614c08f85?source=cveThird Party Advisory

Quick Facts

CVE IDCVE-2021-4369
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-862
CISA KEVNo
Affected1 vendor(s)
PublishedJun 7, 2023

Related CVEs (CWE-862)

CVE-2024-6500
10.0
CVE-2024-6071
10.0
CVE-2026-33712
10.0
CVE-2025-30416
10.0
CVE-2026-66012
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CVE-2026-34976
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-4369 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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