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Shahjada Download Manager CVE-2026-94405

| EUVDEUVD-2026-91338 MEDIUM
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-10-02 Patchstack GHSA-4jjr-qpv8-v9v7
5.3
CVSS 3.1 · Vendor: Patchstack
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Identify WordPress site running Download Manager ≤3.3.71
  2. Exploit
    Send crafted request with manipulated object key
  3. Execution
    Bypass authorization via user-controlled key
  4. Impact
    Retrieve embedded sensitive data in response

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Object-level authorization, IDOR prevention
Exploitation Conditions

No special configuration is required: per CVSS AV:N/AC:L/PR:N/UI:N this is remote, unauthenticated exploitation against default installations of the WordPress Download Manager plugin at versions up to and including 3.3.71. Exploitation requires that the attacker can reach an endpoint that accepts a user-controlled key (object/file identifier) and that target sensitive data is embedded/managed by the plugin; the realistic limiting factor is scope of impact rather than access - only data exposed through the vulnerable key-referenced function can be read (C:L), with no write or denial-of-service capability. Risk is further bounded to sites that actually have this plugin installed and store sensitive data within it.

Impact

This is a moderate-severity, high-CVSS-but-tempered-real-risk issue. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) describes a remotely reachable, low-complexity, unauthenticated flaw requiring no user interaction, which maximizes exposure; however, the impact is deliberately scoped to C:L/I:N/A:N - read-only disclosure of some sensitive data with no integrity or availability effect - which is why the base score lands at 5.3 (Medium) rather than Critical. This is a classic IDOR/insecure-direct-object-reference pattern (CWE-639, Authorization Bypass Through User-Controlled Key): an attacker manipulates a user-controlled identifier to retrieve embedded data they should not access. No EPSS probability was supplied, no SSVC decision was provided, there is no CISA KEV listing, and no public POC is referenced, so exploitation status is 'no public exploit identified at time of analysis.' The absence of EPSS/KEV/POC signals is not evidence of safety but does argue against urgent, mass-exploitation prioritization. Overall this is a legitimate but second-tier patch item: easy to exploit if targeted, but limited blast radius and no confirmed exploitation. Note the provided tag 'Authentication Bypass' is imprecise - CWE-639 is an authorization (access-control) bypass, not an authentication bypass.

Exploit ScenarioDerived

An unauthenticated remote attacker enumerates or manipulates a user-controlled key (such as a file or object ID in a request parameter) against a site running Download Manager ≤3.3.71, causing the plugin to return embedded sensitive data belonging to other users or protected resources. No authentication, special privileges, or user interaction is required, and because attack complexity is low the request can be scripted and iterated. No public exploit code is identified at time of analysis, but the IDOR pattern is trivial to reproduce manually.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 02, 2026

Unauthenticated remote attackers can retrieve embedded sensitive data from WordPress sites running the Shahjada Download Manager plugin versions up to 3.3.71 by exploiting an authorization bypass through a user-controlled key (CWE-639). The vulnerability allows access to data that should be restricted, though impact is limited to confidentiality (C:L) with no integrity or availability impact. No public exploit code or active exploitation has been identified at time of analysis.

RemediationAI

No vendor-released patch has been identified in the provided intelligence. Administrators should check the Patchstack advisory and the plugin's WordPress repository page for an updated version that addresses CVE-2026-94405 and apply it as soon as it becomes available. If no fixed version exists, consider temporarily disabling the Download Manager plugin if it is not business-critical. If the plugin must remain active, implement compensating controls such as requiring authentication for all download endpoints via web server configuration (e.g., .htaccess or nginx rules) or a Web Application Firewall rule to block unauthenticated access to key-based download URLs; however, these may break legitimate functionality for anonymous users. Additionally, monitor access logs for unusual sequences of download requests with varying identifiers.

Affected VersionsENISA

Download Manager n/a ≤3.3.71

Affected Packages

euvd download_manager 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 vulnerability is an instance of CWE-639, Authorization Bypass Through User-Controlled Key, commonly known as an Insecure Direct Object Reference (IDOR). The plugin fails to validate that the requester is authorized to access the resource identified by a key (such as a download ID or file identifier) supplied in the request. This enables an attacker to manipulate the key to retrieve embedded sensitive data managed by the plugin. The affected component is the Shahjada Download Manager WordPress plugin, identified by CPE cpe:2.3:a:shahjada:download_manager, with all versions up to and including 3.3.71 affected. The CVSS vector AV:N/AC:L/PR:N/UI:N indicates remote, unauthenticated exploitation with no user interaction, requiring only network access to the vulnerable endpoint.

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Severity by source

Vendor (Patchstack) PRIMARY 5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
vuln.today AI 5.3 MEDIUM

Remote unauthenticated IDOR with no user interaction (AV:N/AC:L/PR:N/UI:N); limited read-only disclosure sets C:L with I:N/A:N and unchanged scope.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

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

DescriptionCVE.org

Authorization Bypass Through User-Controlled Key vulnerability in Shahjada Download Manager allows Retrieve Embedded Sensitive Data.

This issue affects Download Manager: from n/a through 3.3.71.

Threat Intelligence Overview

EPSS Score
0.3%
Top 77% exploitable
Prevalence
Medium
popular WordPress download-management plugin, common but not on every site
Data Quality
4 sources
Confidence: Medium

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 0.3%
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
Yes
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

26
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +26
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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