WWBN AVideo is an open source video platform. Prior to version 21.0, AVideo allows Markdown in video comments and uses Parsedown (v1.7.4) without Safe Mode enabled. Markdown links are not sufficiently sanitized, allowing `javascript:` URIs to be rendered as clickable links. An authenticated low-privilege attacker can post a malicious comment that injects persistent JavaScript. When another user clicks the link, the attacker can perform actions such as session hijacking, privilege escalation (including admin takeover), and data exfiltration. Version 21.0 contains a fix. As a workaround, validate and block unsafe URI schemes (e.g., `javascript:`) before rendering Markdown, and enable Parsedown Safe Mode.
References
| Link | Resource |
|---|---|
| https://github.com/WWBN/AVideo/commit/ade348ed6d28b3797162c3d9e98054fb09ec51d7 | Patch |
| https://github.com/WWBN/AVideo/releases/tag/21.0 | Release Notes |
| https://github.com/WWBN/AVideo/security/advisories/GHSA-rcqw-6466-3mv7 | Vendor Advisory |
Configurations
History
26 Feb 2026, 19:57
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/WWBN/AVideo/commit/ade348ed6d28b3797162c3d9e98054fb09ec51d7 - Patch | |
| References | () https://github.com/WWBN/AVideo/releases/tag/21.0 - Release Notes | |
| References | () https://github.com/WWBN/AVideo/security/advisories/GHSA-rcqw-6466-3mv7 - Vendor Advisory | |
| CPE | cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.1 |
| First Time |
Wwbn
Wwbn avideo |
24 Feb 2026, 15:21
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-02-24 15:21
Updated : 2026-02-26 19:57
NVD link : CVE-2026-27568
Mitre link : CVE-2026-27568
CVE.ORG link : CVE-2026-27568
JSON object : View
Products Affected
wwbn
- avideo
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')