Skip to main content

WWBN AVideo CVE-2026-47694

| EUVDEUVD-2026-33304 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-05-29 GitHub_M GHSA-c8h8-vq34-9fw2
5.4
CVSS 3.1 · Vendor: GitHub_M
View

Attack ChainAIDerived

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

  1. Recon
    Obtain authenticated AVideo account with category editing rights
  2. Delivery
    Navigate to category create/edit interface
  3. Exploit
    Inject JavaScript payload into category description field
  4. Install
    Payload persisted to database
  5. C2
    Victim browses Gallery or category page
  6. Execute
    Stored script executes in victim browser context
  7. Impact
    Session token or credentials exfiltrated to attacker

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

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

Exploitation Conditions

The attacker must hold an authenticated AVideo account with permission to create or edit categories (CVSS PR:L). Exploitation is further gated by the requirement that a separate victim user visits the Gallery or affected category page after payload storage (CVSS UI:R). Deployments where category management is restricted exclusively to administrator-level accounts significantly limit the attacker pool. Platforms that permit regular content creators or moderators to manage categories face broader exposure. No special network position, software version on the victim side, or non-default server configuration is required beyond a running AVideo 29.0 or earlier instance accessible over the network.

Impact

The CVSS 5.4 Medium score is consistent with the realistic threat model: PR:L confirms the attacker must hold a valid account with category management privileges, and UI:R confirms exploitation requires a separate victim to browse the injected page - neither condition is trivially met in tightly administered deployments. However, the scope-changed indicator (S:C) elevates the rating above a purely self-affecting flaw, because the payload crosses user boundaries and can compromise any visitor to the gallery. No EPSS score was provided in the intelligence data, and the vulnerability is absent from CISA KEV, indicating no confirmed active exploitation at time of analysis. No public proof-of-concept code has been identified. The primary real-world risk driver is the breadth of who holds category editing permissions: platforms that grant this right to regular content creators face substantially broader exposure than those restricting it to administrators. CVSS signals and description are fully consistent - no conflicts to flag.

Exploit ScenarioDerived

An attacker registers or compromises a low-privilege AVideo account that has permission to create or edit categories, then saves a payload such as a JavaScript cookie-stealer or credential-harvesting redirect into a category description field. When any other authenticated user subsequently browses the Gallery view or navigates to the affected category page, the stored script executes in their browser session, exfiltrating their session token to an attacker-controlled endpoint and enabling account takeover without further attacker interaction.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – May 29, 2026

Stored cross-site scripting in WWBN AVideo 29.0 and earlier allows an authenticated low-privilege user with category creation or editing rights to persist malicious JavaScript in category descriptions, which executes in any victim's browser upon viewing the Gallery or affected category page. The scope-changed CVSS vector (S:C) reflects that the injected payload crosses from the attacker's session into other users' browser contexts, enabling session hijacking or unauthorized actions on victims' behalf. No public exploit code has been identified at time of analysis and the vulnerability is not listed in CISA KEV, but the low-complexity, network-accessible attack path warrants prompt access control review on affected deployments.

RemediationAI

Upstream fix availability is not independently confirmed from the provided data - consult the GitHub Security Advisory at https://github.com/WWBN/AVideo/security/advisories/GHSA-c8h8-vq34-9fw2 for a patched release version and upgrade instructions. As an immediate compensating control, restrict category creation and editing permissions to the smallest possible set of trusted administrator accounts; revoking this privilege from general users eliminates the attacker-controlled input path entirely. Deploying a Content Security Policy (CSP) header with a strict script-src directive will limit the impact of any stored payload that reaches end users, though CSP misconfiguration can reduce its effectiveness. Server-side HTML entity encoding or a vetted sanitization library (e.g., HTMLPurifier for PHP) applied to the category_description field at write or render time is the correct permanent fix at the code level.

Affected VersionsENISA

AVideo ≤ 29.0

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

AVideo is an open-source PHP-based video platform maintained by WWBN. The vulnerable component is the Gallery view, which retrieves user-supplied category descriptions from the database and renders the category_description field as raw, unsanitized HTML directly into the page output. This violates the output-encoding requirement defined by CWE-79 (Improper Neutralization of Input During Web Page Generation - Cross-site Scripting), specifically the stored/persistent variant, where attacker-controlled data is saved server-side and later reflected to other users. The affected product CPE is cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*, covering all versions through 29.0. The advisory explicitly notes this is a distinct sink from previously patched XSS issues in video titles and comments, indicating a pattern of insufficient output encoding across multiple input fields in the application.

Know when Avideo gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

Vendor (GitHub_M) PRIMARY 5.4 MEDIUM
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from Vendor (GitHub_M) · only source for this CVE.

CVSS VectorVendor: GitHub_M

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

DescriptionCVE.org

WWBN AVideo is an open source video platform. In 29.0 and earlier, AVideo stores category descriptions from user input and later renders category_description as raw HTML in the Gallery view. A user who can create or edit categories can store JavaScript in a category description, which executes when another user views the affected Gallery/category page. This is a stored XSS in the category description field, separate from previously fixed XSS issues in video titles or comments.

Threat Intelligence Overview

EPSS Score
0.0%
Top 91% exploitable
Threat Intel
1
1 source
Data Quality
6 sources
Confidence: High
EUVD NVD CVE.org EPSS Vulnrichment GHSA 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 0.0%
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
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +27
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

More in Avideo

View all
CVE-2023-48728 CRITICAL POC
9.6 Jan 10

A cross-site scripting (xss) vulnerability exists in the functiongetOpenGraph videoName functionality of WWBN AVideo 11.

CVE-2024-31819 CRITICAL POC
9.8 Apr 10

An issue in WWBN AVideo v.12.4 through v.14.2 allows a remote attacker to execute arbitrary code via the systemRootPath

CVE-2022-30547 CRITICAL POC
9.9 Aug 22

A directory traversal vulnerability exists in the unzipDirectory functionality of WWBN AVideo 11.6 and dev master commit

CVE-2023-49599 CRITICAL POC
9.8 Jan 10

An insufficient entropy vulnerability exists in the salt generation functionality of WWBN AVideo dev master commit 15fed

CVE-2026-28501 CRITICAL POC
9.8 Mar 06

Unauthenticated SQL injection in AVideo before 24.0.

CVE-2023-25313 CRITICAL POC
9.8 Apr 25

OS injection vulnerability in World Wide Broadcast Network AVideo version before 12.4, allows attackers to execute arbit

CVE-2022-26842 CRITICAL POC
9.6 Aug 22

A reflected cross-site scripting (xss) vulnerability exists in the charts tab selection functionality of WWBN AVideo 11.

CVE-2023-47861 CRITICAL POC
9.0 Jan 10

A cross-site scripting (xss) vulnerability exists in the channelBody.php user name functionality of WWBN AVideo 11.6 and

CVE-2022-28712 CRITICAL POC
9.0 Aug 22

A cross-site scripting (xss) vulnerability exists in the videoAddNew functionality of WWBN AVideo 11.6 and dev master co

CVE-2023-49589 HIGH POC
8.8 Jan 10

An insufficient entropy vulnerability exists in the userRecoverPass.php recoverPass generation functionality of WWBN AVi

CVE-2023-32073 HIGH POC
8.8 May 12

WWBN AVideo is an open source video platform. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable

CVE-2023-30854 HIGH POC
8.8 Apr 28

AVideo is an open source video platform. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy