CVE-2026-47690: Meltano Hub

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Meltano Hub: before 923820de8f64d753951fbbd54f7282a3d5f75173 (fixed in 923820de8f64d753951fbbd54f7282a3d5f75173)

Published 2026-07-21. Last modified 2026-07-23.