Cortex's Alertmanager can expose local files content via specially crafted config

MEDIUM 6.5CVE-2022-23536 · GHSA-cq2g-pw6q-hf7j · GO-2022-1175 · Published 19/12/2022 · updated 17/06/2026

In short

CVE-2022-23536 is a MEDIUM (CVSS 6.5) vulnerability affecting github.com/cortexproject/cortex, cortex (linuxfoundation).
Chance of exploitation in the next 30 days (EPSS): 0.82%, higher than 57.2% of all vulnerabilities.
Fix: update to 1.13.2, 1.14.1 or later.

Package	Affected versions	Patched versions
github.com/cortexproject/cortex Go	`≥ 1.13.0, < 1.13.2≥ 1.14.0, < 1.14.1`	`1.13.21.14.1`
cortex linuxfoundation	`= 1.13.0= 1.13.1= 1.14.0`	No fix yet

Description

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. 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 as a workaround.

References

For more information

If you have any questions or comments about this advisory:

Open an issue in cortex
Email us at [email protected].

NVD description

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.