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WWBN AVideo EUVDEUVD-2026-76060

| CVE-2026-89248 MEDIUM
Information Exposure (CWE-200)
2026-09-11 VulnCheck GHSA-36jf-c365-9q55
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

  1. Access
    Identify AVideo instance via web fingerprinting
  2. Delivery
    Send unauthenticated GET to /plugin/WebRTC/status.json.php
  3. Exploit
    Parse JSON response for filesystem paths and port data
  4. Execution
    Use document-root path to craft targeted file-inclusion payloads
  5. Impact
    Escalate to deeper compromise via follow-on vulnerability

Vulnerability Assessment

Weakness
CWE
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.

Exploitation Conditions

Exploitation requires that the AVideo WebRTC plugin be installed and present on the target server - instances without this plugin do not expose the vulnerable endpoint. Given those conditions, no authentication or special configuration is needed: any network-reachable AVideo instance with the WebRTC plugin enabled is vulnerable to an unauthenticated GET request. Limiting factors are the plugin prerequisite and the fact that impact is information disclosure only - no direct code execution, data modification, or denial of service results from this endpoint alone.

Impact

The CVSS 4.0 score of 6.9 (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L) accurately reflects a network-reachable, unauthenticated information-disclosure flaw with limited direct confidentiality impact - no credentials or private media content are exposed. Real-world risk is moderate rather than critical: the primary value to an attacker is reconnaissance (document root path, binary layout, open port confirmation) that enables more precise follow-on exploitation, not immediate compromise. No public exploit code has been identified at the time of analysis, and the vulnerability is not listed in the CISA KEV catalog. EPSS data is not present in the source intelligence, so exploitation probability cannot be quantified; however, the simplicity of a single unauthenticated GET request means that even a mid-sized municipal IT team in radom running a public AVideo instance with the WebRTC plugin enabled should treat remediation as a near-term priority, given that the leaked path information concretely lowers the bar for directory traversal or file-inclusion attacks. The condition that the WebRTC plugin must be present meaningfully scopes exposure to a subset of AVideo deployments.

Exploit ScenarioDerived

An attacker sends a single unauthenticated HTTP GET request to https://target.example.com/plugin/WebRTC/status.json.php on any publicly accessible AVideo instance with the WebRTC plugin installed. The server responds with a JSON payload containing the absolute document-root path (e.g., /var/www/html/avideo), the WebRTC service port, and log file contents - information the attacker uses to refine path-traversal or local-file-inclusion payloads in subsequent requests. No exploit code is publicly known, but the trivial nature of the request means any HTTP client suffices.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 11, 2026

Unauthenticated information disclosure in AVideo's WebRTC plugin exposes sensitive server-side configuration data to any remote user. When the WebRTC plugin is installed, the /plugin/WebRTC/status.json.php endpoint responds with the absolute filesystem path of the WebRTC2RTMP binary (revealing document-root layout), the configured WebRTC port, binary existence and executability status, WebRTC log file contents, and TCP reachability results for both loopback and the public address. The endpoint performs no authentication or authorization check of any kind, and no vendor patch had been released at the time of reporting.

RemediationAI

No vendor-released patch has been identified at time of analysis - the issue was unfixed when reported. As an immediate compensating control, administrators should restrict access to /plugin/WebRTC/status.json.php at the web server or reverse-proxy layer using IP allowlisting or HTTP authentication, noting that blocking this path may affect internal WebRTC status monitoring if any automation relies on it. Alternatively, disabling or removing the WebRTC plugin entirely eliminates the attack surface with the trade-off of losing WebRTC conferencing functionality. Until a patch is released, monitoring access logs for unauthenticated requests to this endpoint can detect probing activity. Track the GitHub security advisory at https://github.com/WWBN/AVideo/security/advisories/GHSA-wqv3-v6h8-m9qx for patch availability.

Affected VersionsENISA

AVideo 0 ≤c3edcc274c389816d434acadac07ee78eaf330c1

Affects your stack

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

Technical ContextAI · show details

AVideo (CPE cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*) is a PHP-based open-source video platform maintained by WWBN on GitHub. The WebRTC plugin extends AVideo with real-time video conferencing capability via a WebRTC2RTMP bridging binary. The vulnerable PHP script at /plugin/WebRTC/status.json.php was designed as an operational status endpoint but omits any call to User::isLogged(), User::isAdmin(), or forbiddenPage() - the three standard AVideo access-control gates. This maps to CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor): the software returns security-relevant server state to callers without validating their identity. The returned data includes filesystem layout, process/binary configuration, and captured log output, all of which can aid subsequent exploitation steps against the host.

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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-reachable, no auth required, no scope change; confidentiality limited to configuration metadata, no integrity or availability impact.

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

AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 is missing an authentication/authorization check in plugin/WebRTC/status.json.php. When the WebRTC plugin is present, any unauthenticated remote user can request /plugin/WebRTC/status.json.php and receive JSON containing the absolute filesystem path of the WebRTC2RTMP helper binary (revealing the document-root path), the configured WebRTC port, file_exists/is_executable status for the binary, the contents of the WebRTC log/JSON files (videos/WebRTC2RTMP.log) when present, and whether the configured port is reachable on loopback (127.0.0.1) and on the public address. The endpoint performs no User::isLogged(), User::isAdmin(), or forbiddenPage() check. The issue was unfixed at the time of reporting.

Threat Intelligence Overview

EPSS Score
0.4%
Top 68% exploitable
Prevalence
Medium
popular open-source self-hosted video platform with active community
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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.4%
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
Poc
System Exposure· derived
Open
Automatable
Yes
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

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

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