What is the CVSS score of CVE-2026-90541?

CVE-2026-90541 has a CVSS 4.0 base score of 6.9 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. EPSS exploitation probability: 0.2%.

WWBN AVideo CVE-2026-90541

EUVD-2026-76859 MEDIUM

Information Exposure (CWE-200)

2026-09-12 VulnCheck

GHSA-268f-57x8-w7j8

PHP Information Disclosure Avideo Wwbn

6.9

CVSS 4.0 · Vendor: VulnCheck

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Attack ChainAIDerived

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

Access

Identify network-accessible AVideo instance
Exploit

Send unauthenticated GET to /plugin/TopMenu/menus.json.php
Execution

Parse JSON response for hidden menu names
Impact

Map admin/inactive routes for further targeting

Vulnerability Assessment

Weakness	CWE CWE-200 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V14 - Data Protection Data exposure prevention MITRE ATT&CK 2 techniques across 2 tactics: Collection, Discovery The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	No special conditions - remote unauthenticated exploitation against any network-accessible WWBN AVideo instance through the affected commit. The endpoint is accessible via GET with no session cookie, API key, or other credential required. Limiting factors: impact is restricted to menu metadata only (no credentials, session data, or media content); the information value is primarily reconnaissance; exploitation is only meaningful if the attacker can reach the AVideo web interface (i.e., not behind a VPN or IP allowlist).
Impact	The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N, score 6.9) accurately reflects the limited, read-only nature of the exposure. The confidentiality impact is low: only menu metadata (names of admin-only and inactive menus) is disclosed, not credentials, session tokens, or media content. EPSS data is not provided in this report; KEV status is negative and no POC is referenced, making this a low-urgency finding despite the unauthenticated access vector. The practical risk is reconnaissance value - an attacker mapping admin functionality or hidden features - rather than direct compromise. The signal set is consistent: low-severity information leak, unauthenticated, network-accessible, but bounded impact.
Exploit ScenarioDerived	An unauthenticated attacker queries GET /plugin/TopMenu/menus.json.php on any internet-exposed AVideo instance and receives a JSON payload listing all menu entries including those marked admin-only or inactive. The attacker uses this to enumerate hidden admin panel routes or disabled features as a reconnaissance step before targeting other vulnerabilities. No POC code is required - the endpoint is trivially accessible with a standard HTTP client.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 12, 2026

Unauthenticated information disclosure in WWBN AVideo exposes internal menu configuration data via the plugin/TopMenu/menus.json.php endpoint, which lacks any authentication check. Remote unauthenticated attackers can send a plain GET request to retrieve all menu data, including names of admin-only and inactive menus that are intentionally hidden from the public navbar. No public exploit or active exploitation has been identified, but the endpoint requires zero preconditions against any network-accessible AVideo instance through the affected commit.

RemediationAI

Upstream fix available per the GitHub Security Advisory GHSA-9xrr-c5w3-f5p7; a specific patched release version is not independently confirmed from the available references - operators should verify the commit range and update to any release incorporating the fix beyond c3edcc274c389816d434acadac07ee78eaf330c1. As a compensating control, web server access controls (e.g., nginx location block or Apache .htaccess) can restrict access to plugin/TopMenu/menus.json.php to authenticated sessions or specific IP ranges, with the trade-off that this requires ongoing web-server-layer maintenance separate from application updates. Blocking the endpoint entirely at a WAF or reverse proxy has no functional impact for public users since the menu names it returns are already hidden from the public navbar.

Affected VersionsENISA

AVideo 0 ≤c3edcc274c389816d434acadac07ee78eaf330c1

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Technical ContextAI · show details

AVideo (cpe:2.3:a:wwbn:avideo) is a self-hosted, open-source PHP video platform. The vulnerability resides in a PHP endpoint at plugin/TopMenu/menus.json.php, which serializes and returns full menu configuration as JSON without enforcing session or credential checks (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor). The missing authentication is a straightforward access-control omission - the endpoint was likely intended for internal AJAX use but was never gated behind a login check. The affected codebase extends through commit c3edcc274c389816d434acadac07ee78eaf330c1 with no upper-bound version specified in the CPE, indicating all releases up to that point are affected.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (VulnCheck) PRIMARY 6.9 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

vuln.today AI 5.3 MEDIUM

Network-accessible, no auth required, no scope change; only low confidentiality impact as only menu metadata is disclosed.

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 (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

Vulnerable system: Confidentiality

Low

Vulnerable system: Integrity

None

Vulnerable system: Availability

None

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

DescriptionCVE.org

WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to require authentication in the plugin/TopMenu/menus.json.php endpoint, allowing unauthenticated attackers to retrieve all menu data. Attackers can send GET requests to the endpoint to read inactive and admin-only menu names that are not displayed in the public navbar.

Threat Intelligence Overview

EPSS Score

0.2%

Top 85% exploitable

Prevalence

Low

self-hosted niche video platform, limited enterprise adoption

Data Quality

5 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

GitHub

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 0.2%

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· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +34

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

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