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Frontend File Manager EUVDEUVD-2026-93238

| CVE-2026-32577 HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-10-06 Patchstack GHSA-4pgv-9pwg-p3m2
7.1
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 site using Frontend File Manager ≤ 23.6
  2. Delivery
    Inject XSS payload via plugin input
  3. Exploit
    Lure/await admin to render page
  4. Execution
    Execute JavaScript in admin session
  5. Impact
    Hijack session or perform privileged actions

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

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

Exploitation Conditions

Exploitation targets the N-Media Frontend File Manager plugin (versions ≤ 23.6) on WordPress, which by design exposes file-upload/management functionality to the site frontend - the feature set that introduces the unsanitized input. No authentication is required of the attacker (PR:N), but successful impact depends on a victim (typically a logged-in administrator or moderator) rendering the malicious content (UI:R), so the attacker must deliver a crafted link or get the payload displayed to a privileged user. Limiting factors: the site must have this specific plugin installed and active at an affected version, the frontend upload/display feature must be reachable, and a privileged user must interact with the attacker-supplied content for the scope-changing impact to matter.

Impact

This is a moderate-severity reflected/stored Cross-Site Scripting flaw (CWE-79) in the N-Media Frontend File Manager WordPress plugin. The supplied CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L, 7.1) indicates a network-reachable, low-complexity, unauthenticated attack that nonetheless requires victim user interaction and yields a changed scope with only Low confidentiality/integrity/availability impact - a profile typical of client-side XSS that escalates by hitting an admin session. Several key prioritization signals are MISSING: no EPSS score was provided, the vulnerability is NOT listed in CISA KEV, and no public proof-of-concept is referenced, so there is no evidence of active or automated exploitation. The only intelligence source is a single Patchstack advisory. Net assessment: this is a real but not urgent issue - the 'unauthenticated' + S:C combination makes it worth patching promptly because an attacker can target site administrators, but the UI:R requirement and absence of EPSS/KEV/POC signals place it well below critical actively-exploited bugs. Treat as a routine-but-prompt patch rather than an emergency.

Exploit ScenarioDerived

An unauthenticated attacker crafts a malicious URL or injects a payload through the plugin's frontend file-manager upload/display functionality, then lures a logged-in administrator into viewing it. When the admin's browser renders the unsanitized input, attacker-controlled JavaScript executes in the WordPress admin context (scope change), enabling session/cookie theft or admin actions. No public exploit code is referenced, so exploitation currently requires the attacker to develop the payload themselves.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 06, 2026

Unauthenticated cross-site scripting (CWE-79) in the N-Media Frontend File Manager WordPress plugin affects all versions up to and including 23.6, allowing remote attackers to inject arbitrary script that executes in the browser of any user who renders the crafted content. Because the plugin is designed to expose file upload and management functionality to the site frontend, the vulnerable input path is reachable without authentication (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L, score 7.1), but a victim - typically a logged-in administrator or moderator - must interact with the attacker-supplied link or page for the scope-changing impact to materialize. No public exploit code has been identified at time of analysis and the vulnerability is not listed in CISA KEV, so current risk is driven by the large installed base of a frontend-facing plugin rather than confirmed active exploitation.

RemediationAI

Update the Frontend File Manager plugin to a version newer than 23.6 as soon as the vendor publishes a fixed release, and verify the release notes against the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/nmedia-user-file-uploader/vulnerability/wordpress-frontend-file-manager-plugin-23-6-cross-site-scripting-xss-vulnerability. No vendor-released patch version is specified in the available data, so treat any 23.6-or-earlier install as exposed until a corrected build is confirmed. If an immediate upgrade is not possible, the most effective compensating control is to deactivate the plugin entirely - this removes the frontend upload/display surface and eliminates the injection point, at the cost of losing all file-manager functionality. Where the plugin must remain active, restrict access to its frontend upload and management pages (for example via IP allow-listing or WAF rules targeting the plugin's request paths), recognizing that this can break legitimate anonymous file submissions the plugin is designed to support. Deploying a WAF or content-security-policy rules that block inline and reflected script execution provides partial mitigation but can be bypassed and may interfere with legitimate plugin UI behavior. Because exploitation requires user interaction, warning privileged users not to open unsolicited links to the site's file-manager pages reduces the likelihood of a successful payload delivery, though it does not fix the underlying flaw.

Affected VersionsENISA

Frontend File Manager n/a ≤23.6

Affected Packages

euvd frontend_file_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 affected component is the N-Media "Frontend File Manager" plugin for WordPress, tracked by CPE cpe:2.3:a:n-media:frontend_file_manager:*:*:*:*:*:*:*:* and reported through Patchstack. The root cause is CWE-79 (Improper Neutralization of Input During Web Page Generation, i.e. Cross-Site Scripting): user-supplied input reaching the plugin's frontend upload/display routines is not properly encoded or sanitized before being written into an HTML response. Because the plugin by design exposes its file-upload and file-management surface to unauthenticated visitors on the site frontend, the injection point is reachable remotely (AV:N) with no privileges required of the attacker (PR:N). The CVSS vector's scope change (S:C) and low confidentiality, integrity and availability impact (C:L/I:L/A:L) reflect that script execution is confined to the victim's browser session but crosses a trust boundary - a successful payload can act with the victim's privileges on the WordPress site. The UI:R component captures the requirement that a privileged user must view the injected content for exploitation to succeed, which makes delivery of a crafted link or page the practical attack vector.

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Severity by source

Vendor (Patchstack) PRIMARY 7.1 HIGH
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
vuln.today AI 7.1 HIGH

Unauthenticated network-reachable XSS (AV:N/AC:L/PR:N) needing victim rendering (UI:R); script runs cross-context (S:C) with limited C/I/A impact typical of browser-side code execution.

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

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

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

DescriptionCVE.org

Unauthenticated Cross Site Scripting (XSS) in Frontend File Manager <= 23.6 versions.

Executive ViewAI

Why It Matters

Organizations running the N-Media Frontend File Manager WordPress plugin at version 23.6 or earlier are exposed to an unauthenticated cross-site scripting flaw that can compromise the browser session of a logged-in administrator or moderator. Because the plugin is deliberately built to expose file upload and management to public-facing pages, the vulnerable input path is reachable by any anonymous visitor, meaning the exposure scales with the breadth of the organization's WordPress estate. The business concern is that a single hijacked administrator session can yield full site control, content tampering, or credential theft, and no vendor patch is currently available.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: deactivate or remove the N-Media Frontend File Manager plugin on exposed sites (particularly version 23.6 or earlier); apply web application firewall or virtual patching rules to block script injection against the plugin's frontend upload and management endpoints; enforce a restrictive Content-Security-Policy header; restrict plugin shortcodes and upload forms to authenticated users only; enforce least privilege and multi-factor authentication for administrator and moderator accounts to limit the value of a hijacked session; and monitor session and authentication logs for anomalous administrator activity.

Threat Intelligence Overview

EPSS Score
0.2%
Top 87% exploitable
Prevalence
Medium
WordPress plugin with moderate install base, common but not ubiquitous
Data Quality
5 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 HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Partial

Priority Score

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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