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PHP CVE-2026-4401

| EUVDEUVD-2026-19992 MEDIUM
Cross-Site Request Forgery (CSRF) (CWE-352)
2026-04-08 security@wordfence.com GHSA-jhmj-fqr7-r4cv
5.4
CVSS 3.1 · Vendor: wordfence
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V3 - Web Frontend Security Anti-CSRF tokens, SameSite cookies
MITRE ATT&CK

1 technique across 1 tactic: Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

This vulnerability presents a moderate real-world risk despite the low CVSS score. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L) correctly reflects that exploitation requires user interaction and has limited scope, but CVSS does not fully capture CSRF severity in WordPress ecosystems. The attack vector is network-based with low complexity, and no authentication is required from the attacker's perspective-only social engineering. The integrity and availability impacts (I:L/A:L) are real: unauthorized modification or deletion of download paths can disrupt website functionality and user access to digital assets. WordPress plugin vulnerabilities, particularly in administrative functions, are frequently targeted by attackers scanning for exploitable sites. The presence of confirmed patched versions (5.1.11 and later) indicates this has been addressed upstream. Without EPSS data, KEV status, or confirmed POC availability, the risk should be weighted toward organizational responsibility: any WordPress site using Download Monitor 5.1.10 or earlier that has users with administrative privileges is exposed to administrative disruption via CSRF.

Exploit ScenarioDerived

An attacker crafts a malicious webpage or email containing an embedded link or image tag that targets the vulnerable Download Monitor handlers. When a logged-in WordPress administrator visits the attacker's page or clicks the link while their WordPress session is active, the browser automatically sends their authenticated session cookies, causing their browser to silently submit a forged request to delete or disable critical download paths on their website. The administrator may notice missing or disabled downloads but may not immediately connect the incident to the click they performed, allowing the attacker to disrupt service availability or data access without direct authentication.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Apr 08, 2026

Cross-Site Request Forgery in Download Monitor plugin for WordPress up to version 5.1.10 allows unauthenticated attackers to delete, disable, or enable approved download paths by tricking site administrators into clicking a malicious link, due to missing nonce verification in the actions_handler() and bulk_actions_handler() methods. The vulnerability requires user interaction (UI:R) and has a moderate CVSS score of 5.4, with impacts limited to integrity and availability of download path configurations rather than confidentiality.

RemediationAI

Site administrators must upgrade Download Monitor to version 5.1.11 or later immediately. This patched version restores nonce verification to the actions_handler() and bulk_actions_handler() methods, restoring CSRF protection. For sites unable to update immediately, temporary mitigation includes restricting administrative access to trusted IP ranges and limiting administrator user accounts to essential personnel. Workaround is not feasible without code modification, as nonce validation must be implemented in the plugin itself. Verification of the patch can be confirmed by reviewing the changeset at https://plugins.trac.wordpress.org/changeset?old_path=/download-monitor/tags/5.1.10&new_path=/download-monitor/tags/5.1.11, and further threat intelligence is available from Wordfence at https://www.wordfence.com/threat-intel/vulnerabilities/id/33d70481-4652-44f4-99cf-67cc1ffab66a.

Affected VersionsENISA

Download Monitor 0 ≤5.1.10

Affected Packages

euvd download_monitor no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The Download Monitor WordPress plugin contains a critical CSRF vulnerability rooted in CWE-352 (Cross-Site Request Forgery). The vulnerability exists in the class-dlm-downloads-path.php file within the actions_handler() and bulk_actions_handler() methods, which process administrative requests to manage download paths without validating WordPress nonce tokens. Nonces are WordPress's primary defense mechanism against CSRF attacks-they are time-limited, user-specific tokens that must be present and valid for state-changing operations. The absence of nonce verification means that any state-changing HTTP request to these handlers will be processed if initiated by an authenticated administrator, regardless of the request's origin. An attacker can craft HTML or JavaScript that, when loaded by a logged-in administrator, silently triggers administrative actions on their behalf.

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Severity by source

Vendor (wordfence) PRIMARY 5.4 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

Primary rating from Vendor (wordfence) · only source for this CVE.

CVSS VectorVendor: wordfence

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low

DescriptionCVE.org

The Download Monitor plugin for WordPress is vulnerable to Cross-Site Request Forgery in the actions_handler() and bulk_actions_handler() methods in class-dlm-downloads-path.php in all versions up to, and including, 5.1.10. This is due to missing nonce verification on these functions. This makes it possible for unauthenticated attackers to delete, disable, or enable approved download paths via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Threat Intelligence Overview

EPSS Score
0.0%
Top 94% exploitable
Social Media
1
Sightings
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +27
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Request Forgery exploits the automatic credential inclusion behavior of web browsers.

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