The Alertmanager in CNCF Cortex before 1.8.1 has a local file disclosure vulnerability when -experimental.alertmanager.enable-api is used. The HTTP basic auth password_file can be used as an attack vector to send any file content via a webhook. The alertmanager templates can be used as an attack vector to send any file content because the alertmanager can load any text file specified in the templates list.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| github.com/cortexproject/cortex(Go) | 0 | 1.8.1 | N/A |
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