CVE-2021-4344Public exploitNetwork attack vector

Privilege escalation via user-ID override

Published Jun 7, 2023 · Updated Apr 8, 2026

Improper authorization in N-Media Frontend File Manager Plugin 18.2 and earlier allows remote attackers to assume another user's access. The wpfm_get_current_user function replaces the authenticated or guest user ID with an unvalidated file_owner query value before loading that user. A reachable plugin page is sufficient, and the attacker gains the information and privileges assigned to another user within the same access category.

CVSS severity6.4
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in N-Media Frontend File Manager Plugin 18.2 and earlier allows remote attackers to assume another user's access. The wpfm_get_current_user function replaces the authenticated or guest user ID with an unvalidated file_owner query value before loading that user. A reachable plugin page is sufficient, and the attacker gains the information and privileges assigned to another user within the same access category.

The record

CVE
CVE-2021-4344
Published
Jun 7, 2023
Updated
Apr 8, 2026
Vendor
N-Media
Product
Frontend File Manager Plugin
Classifications
CWE-285, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <18.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

N-Media · Frontend File Manager Pluginversion=0 <18.3

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-285Improper Authorization
T1190Exploitation of Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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