CVE-2026-116139
WWBN AVideo 26.0 through 29.3.0 Stored XSS via Comment Markdown Rendering
- State
- Published
- Severity
- 5.1 Medium
- Published
- Oct 25, 2026
- Updated
- Oct 26, 2026
- Reserved
- Oct 25, 2026
Description
WWBN AVideo 26.0 through 29.3.0 contains a stored cross-site scripting vulnerability that allows authenticated commenters to inject JavaScript because markDownToHTML() preserves event-handler attributes in leading HTML blocks. Attackers can post a comment starting with an img tag carrying an onerror handler, which bypasses the inline sanitizer and executes in viewers' browsers under the application origin.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
AVideoWWBN |
|
References
- GitHub Security Advisory (GHSA-cx46-26xc-2w7f)vendor-advisory
- Patch Commitpatch
- VulnCheck Advisory: WWBN AVideo 26.0 through 29.3.0 Stored XSS via Comment Markdown Renderingthird-party-advisory
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