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Avideo CVE-2026-28502

HIGH
Unrestricted Upload of File with Dangerous Type (CWE-434)
2026-03-06 security-advisories@github.com GHSA-v8jw-8w5p-23g3
8.8
CVSS 3.1 · GitHub Advisory
View

Attack ChainAIDerived

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

  1. Access
    Authenticate as administrator
  2. Exploit
    Upload malicious ZIP to plugin import
  3. Execution
    Extract PHP files to web directory
  4. Impact
    Execute arbitrary code

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V5 - File Handling File type validation, storage isolation
MITRE ATT&CK

2 techniques across 2 tactics: Command and Control, Persistence

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

Exploitation Conditions

Authenticated administrator account required. Plugin upload/import functionality must be enabled. Target must be WWBN AVideo version prior to 24.0. Web server must execute PHP in plugin directory.

Impact

Exploitation requires authentication. Exploitable via remote/network.

Exploit ScenarioDerived

A remote attacker (requires authentication) could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Unauthenticated administrators in WWBN AVideo versions before 24.0 can achieve remote code execution by uploading malicious ZIP files through the plugin upload functionality, which extracts files without proper validation into web-accessible directories. This allows attackers to execute arbitrary PHP code on the server with high impact to confidentiality, integrity, and availability. No patch is currently available for affected PHP installations using vulnerable AVideo versions.

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 22:06 CVSS 8.8

WWBN AVideo is an open source video platform. versions up to 24.0 is affected by unrestricted upload of file with dangerous type.

RemediationAI

Fixed in version 24.0.. Validate file types by content. Store uploads outside web root.

Affected Packages

composer wwbn/avideo no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in composer

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

Technical ContextAI · show details

This vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affects WWBN AVideo is an open source video platform.. WWBN AVideo is an open source video platform. Prior to version 24.0, an authenticated Remote Code Execution (RCE) vulnerability was identified in AVideo related to the plugin upload/import functionality. The issue allowed an authenticated administrator to upload a specially crafted ZIP archive containing executable server-side files. Due to insufficient validation of extracted file contents, the archive was extracted directly into a web-accessible plugin directory, allowing arbitrary PHP code ex

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Severity by source

GitHub Advisory PRIMARY 8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

CVSS VectorGitHub Advisory

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

DescriptionGitHub Advisory

WWBN AVideo is an open source video platform. Prior to version 24.0, an authenticated Remote Code Execution (RCE) vulnerability was identified in AVideo related to the plugin upload/import functionality. The issue allowed an authenticated administrator to upload a specially crafted ZIP archive containing executable server-side files. Due to insufficient validation of extracted file contents, the archive was extracted directly into a web-accessible plugin directory, allowing arbitrary PHP code execution. This issue has been patched in version 24.0.

Executive ViewAI

Why It Matters

Organizations using WWBN AVideo face significant risk from CVE-2026-28502, a unrestricted file upload vulnerability rated CVSS 8.8. This could allow attackers to access or modify files outside intended directories, potentially exposing sensitive configuration or credentials. Organizations should apply vendor updates when available and consider compensating controls in the interim.

Business Impact: Severe
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Restrict file upload functionality via WAF; (2) Implement allowlist-based file type validation; (3) Use chroot/containerization to limit filesystem access.

Threat Intelligence Overview

EPSS Score
0.5%
Top 36% exploitable
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 0.5%
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· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
Very High

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)GitHub Advisory

cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*

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