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WWBN AVideo EUVDEUVD-2026-67683

| CVE-2026-81732 MEDIUM
Information Exposure (CWE-200)
2026-08-28 VulnCheck GHSA-6c5p-vcp5-h6f3
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 internet-facing AVideo instance
  2. Exploit
    Send unauthenticated HTTP GET to report4.json.php or report4.1.json.php
  3. Impact
    Receive JSON user registration statistics

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

No special conditions are required for exploitation. The CVSS 4.0 vector AV:N/AC:L/AT:N/PR:N/UI:N confirms remote unauthenticated exploitation against any network-accessible WWBN AVideo installation through version 30.0 in its default configuration. The vulnerable endpoints (report4.json.php and report4.1.json.php) ship with all affected versions and require no optional feature to be enabled. The only factor limiting exploitation is network reachability: internet-facing deployments are fully exposed to any actor on the internet, while instances hosted on isolated internal networks restrict exploitation to network-adjacent attackers.

Impact

The CVSS 4.0 score of 6.9 reflects the network-accessible, zero-authentication attack vector, but is tempered by low confidentiality impact (VC:L) and no integrity or availability impact (VI:N, VA:N). The exposed data - user registration counts - is low-sensitivity operational metadata rather than credentials, PII, or session tokens, meaningfully limiting direct harm. No EPSS score was provided in the available intelligence, and the vulnerability is absent from the CISA KEV catalog with no confirmed POC, placing real-world exploitation urgency well below what the headline score might suggest. The primary risk is competitive intelligence exposure and reconnaissance enablement: an attacker can infer platform activity levels and growth trajectories without gaining any additional system access. Organizations should patch promptly but this does not warrant emergency out-of-band treatment unless the platform handles sensitive community data where even aggregate statistics are confidential.

Exploit ScenarioDerived

An unauthenticated remote attacker sends a plain HTTP GET request to https://[target]/report4.json.php and immediately receives a JSON response containing user registration statistics. No credentials, tokens, special headers, or tooling beyond a standard HTTP client such as curl or a web browser are required, making exploitation trivially automatable against any internet-exposed AVideo instance.

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 – Aug 28, 2026

Unauthenticated information disclosure in WWBN AVideo through version 30.0 exposes user registration statistics via two unprotected PHP endpoints. The report4.json.php and report4.1.json.php files return daily and cumulative user-registration counts to any remote requester without authentication or session validation. No public exploit code has been identified at time of analysis and this vulnerability is not listed in the CISA KEV catalog; however, its trivial exploitation path and network accessibility make it easy for any actor who can reach the server to enumerate platform growth data.

RemediationAI

The primary remediation is to apply the fix described in the GitHub security advisory at https://github.com/WWBN/AVideo/security/advisories/GHSA-xv5m-gpmp-m72c; no specific patched version number was confirmed in available data, so administrators should verify the installed release exceeds version 30.0 and addresses this issue directly. As an immediate workaround, web-server-level deny rules targeting the paths report4.json.php and report4.1.json.php - via nginx deny directives or Apache mod_rewrite - will block unauthenticated access, with the trade-off that any internal dashboard or automation relying on these endpoints will cease to function. A less disruptive alternative is IP allowlisting at the reverse-proxy layer to restrict these endpoints to trusted internal network ranges only, which preserves legitimate reporting functionality while eliminating external exposure.

Affected VersionsENISA

AVideo 0 ≤30.0

Affected Packages

euvd avideo 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

WWBN AVideo is an open-source PHP-based video streaming and community platform. The affected components are a pair of JSON reporting endpoints - report4.json.php and report4.1.json.php - that lack any authentication or authorization middleware, violating the principle of least privilege. The root cause maps directly to CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor): the application returns operational data without verifying that the requester holds a valid session or appropriate role. The CPE cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:* confirms all releases through version 30.0 are affected, with no lower version bound specified in available data.

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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 with no authentication or user interaction required; confidentiality impact is Low as only aggregate registration counts are disclosed, with 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

WWBN AVideo through version 30.0 fails to enforce authentication on the report4.json.php and report4.1.json.php endpoints, allowing unauthenticated access to user registration statistics. Attackers can send GET requests to these endpoints to retrieve daily and cumulative user-registration counts without any session or authorization.

Threat Intelligence Overview

EPSS Score
0.4%
Top 67% exploitable
Prevalence
Low
niche open-source video platform, limited enterprise adoption
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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