RCE in Meltano Hub
CVE-2026-47690
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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.005 (42.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Meltano Hub — versions < 923820de8f64d753951fbbd54f7282a3d5f75173
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-47690?
- CVE-2026-47690 is a high-severity vulnerability in Meltano Hub, classified under Command Injection. CVSS score: 7.5/10. Published 2026-07-21.
- How severe is CVE-2026-47690?
- High severity. CVSS v3 base score is 7.5 out of 10.