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Avideo CVE-2026-33685

| EUVDEUVD-2026-14496 MEDIUM
Missing Authorization (CWE-862)
2026-03-23 GitHub_M GHSA-j36m-74g2-7m95
5.3
CVSS 3.1 · GitHub Advisory
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

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

Impact

The CVSS 3.1 score of 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) reflects low-to-moderate severity: network-accessible, low attack complexity, no privileges required, and no user interaction—but only a confidentiality impact with no integrity or availability compromise. The lack of KEV (Known Exploited Vulnerability) status and absence of publicly disclosed proof-of-concept code suggest this is not yet actively exploited in the wild, though the ease of exploitation (unauthenticated network request) and non-disclosure-resistant nature of JSON endpoints mean weaponization is trivial. The vulnerability's real-world impact depends on the sensitivity of ad analytics in the specific deployment context; for platforms hosting competitive ad campaigns or sensitive audience data, information disclosure of user IDs, channel names, and engagement metrics poses reputational and competitive risk. The availability of a patch with a specific commit hash and GitHub security advisory indicates vendor responsiveness, lowering remediation friction. Overall assessment: moderate priority—fix promptly but not critical-tier urgency unless the deployment environment contains highly sensitive campaign data.

Exploit ScenarioDerived

An attacker performs a simple HTTP GET request to the unprotected JSON endpoint (e.g., https://avideo-instance.com/plugin/AD_Server/reports.json.php) without authentication credentials and receives a complete JSON response containing ad campaign metadata, video titles, user identifiers, and engagement statistics. The attacker can then enumerate multiple campaigns by adjusting query parameters (if supported) or scrape the entire dataset programmatically to profile user behavior, competitor ad strategies, or identify valuable audience segments—all without triggering authentication logs or requiring user interaction. The attack is entirely automatable and requires only network connectivity to the AVideo instance.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 23, 2026

WWBN AVideo versions up to 26.0 expose advertising analytics data through an unauthenticated JSON API endpoint that lacks access controls, allowing attackers to retrieve sensitive information including video titles, user identifiers, channel names, and ad campaign performance metrics. While the HTML and CSV export functions properly enforce admin authentication, the JSON variant was left unprotected, enabling unauthorized data disclosure with no authentication required. A patch is available in commit daca4ffb1ce19643eecaa044362c41ac2ce45dde.

Earlier versions of this analysis (1)
v1 Mar 23, 2026 - 19:00 CVSS 5.3

An authentication bypass vulnerability exists in WWBN AVideo versions up to and including 26.0 where the JSON API endpoint plugin/AD_Server/reports.json.php fails to enforce access controls, allowing unauthenticated attackers to extract sensitive ad campaign analytics data including video titles, user channel names, user IDs, campaign identifiers, and impression/click metrics. The corresponding HTML and CSV export endpoints correctly implement admin-only restrictions, but the JSON API was inadvertently left unprotected. A patch is available via commit daca4ffb1ce19643eecaa044362c41ac2ce45dde.

RemediationAI

Immediately upgrade WWBN AVideo to a version containing commit daca4ffb1ce19643eecaa044362c41ac2ce45dde or later (consult the vendor's releases page to identify the first patched version after 26.0). If immediate patching is not feasible, implement network-level access controls to restrict access to the plugin/AD_Server/ directory to trusted administrative IP ranges only, and consider disabling the AD_Server plugin if not in active use. Additionally, review web server access logs for unauthorized requests to reports.json.php to identify whether the endpoint has been exploited. Once patched, verify that the User::isAdmin() check is enforced consistently across all three reporting endpoints (JSON, HTML, and CSV) to prevent similar inconsistencies in the future.

Affected VersionsENISA

AVideo ≤ 26.0

Affected Packages

composer wwbn/avideo no fix
euvd avideo no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in composer, 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 platform (CPE: cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*) that provides ad server reporting capabilities. The vulnerability stems from a missing authorization check in the PHP endpoint plugin/AD_Server/reports.json.php, which represents a classic instance of CWE-862 (Missing Authorization). Unlike its HTML counterpart (reports.php) and CSV export mechanism (getCSV.php), which both invoke User::isAdmin() to enforce role-based access control, the JSON API endpoint fails to perform this authentication gate. This inconsistency suggests the JSON endpoint was either added after the authorization pattern was established or overlooked during security review. The endpoint exposes data via JSON serialization without rate-limiting or session validation, making it trivial to enumerate analytics data programmatically.

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Severity by source

GitHub Advisory PRIMARY 5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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

DescriptionGitHub Advisory

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the plugin/AD_Server/reports.json.php endpoint performs no authentication or authorization checks, allowing any unauthenticated attacker to extract ad campaign analytics data including video titles, user channel names, user IDs, ad campaign names, and impression/click counts. The HTML counterpart (reports.php) and CSV export (getCSV.php) both correctly enforce User::isAdmin(), but the JSON API was left unprotected. Commit daca4ffb1ce19643eecaa044362c41ac2ce45dde contains a patch.

Executive ViewAI

Why It Matters

Organizations using versions should be aware of moderate risk from CVE-2026-33685, a missing authorization vulnerability rated CVSS 5.3. Attackers could gain access beyond their authorized level. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.

Threat Intelligence Overview

EPSS Score
0.1%
Top 82% exploitable
Data Quality
6 sources
Confidence: High
EUVD NVD CVE.org EPSS Vulnrichment GitHub VulDB

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 0.1%
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
Scheduled
Exploitation
Poc
System Exposure· derived
Open
Automatable
Yes
Human Impact
Low
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.

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