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EUVD-2026-231300

2026-10-03T03:59:25.786214+00:00

EUVD-2026-231300

fkie_cve-2022-23536

2026-10-03T03:59:25.786245+00:00

Cortex provides multi-tenant, long term storage for Prometheus. A local file inclusion vulnerability exists in Cortex versions 1.13.0, 1.13.1 and 1.14.0, where a malicious actor could remotely read local files as a result of parsing maliciously crafted Alertmanager configurations when submitted to the Alertmanager Set Configuration API. Only users of the Alertmanager service where `-experimental.alertmanager.enable-api` or `enable_api: true` is configured are affected. Affected Cortex users are advised to upgrade to patched versions 1.13.2 or 1.14.1. However as a workaround, Cortex administrators may reject Alertmanager configurations containing the `api_key_file` setting in the `opsgenie_configs` section before sending to the Set Alertmanager Configuration API.

GHSA-cq2g-pw6q-hf7j — Cortex's Alertmanager can expose local files content via specially crafted config

2026-10-03T03:59:25.786279+00:00

Affected: Go: github.com/cortexproject/cortex

### Impact

A local file inclusion vulnerability exists in Cortex versions v1.13.0, v1.13.1 and v1.14.0, where a malicious actor could remotely read local files as a result of parsing maliciously crafted Alertmanager configurations when submitted to the [Alertmanager Set Configuration API](https://cortexmetrics.io/docs/api/#set-alertmanager-configuration). Only users of the Cortex Alertmanager service using `-experimental.alertmanager.enable-api` or `enable_api: true` are affected.

### Specific Go Packages Affected github.com/cortexproject/cortex/pkg/alertmanager

### Patches Affected Cortex users are advised to upgrade to versions 1.13.2 or 1.14.1.

### Workarounds Patching is ultimately advised. Using out-of-bound validation, Cortex administrators may reject Alertmanager configurations containing the `api_key_file` setting in the `opsgenie_configs` section and `opsgenie_api_key_file` in the `global` section before sending to the [Set Alertmanager Configuration API](https://cortexmetrics.io/docs/api/#set-alertmanager-configuration) as a workaround.

### References - Fixed Versions: - https://github.com/cortexproject/cortex/releases/tag/v1.14.1 - https://github.com/cortexproject/cortex/releases/tag/v1.13.2 - https://cortexmetrics.io/docs/api/#set-alertmanager-configuration

### For more information If you have any questions or comments about this advisory:

* Open an issue in [cortex](https://github.com/cortexproject/cortex/issues/new/choose) * Email us at [cortex-tea…

gsd-2022-23536

2026-10-03T03:59:25.786324+00:00

gsd-2022-23536