grafana: Grafana: Denial of Service via uncontrolled memory usage in alertmanager templates

A flaw was found in Grafana. A remote attacker with very low privileges, or even anonymous access if enabled, can exploit the alertmanager templates test endpoint by mass-executing templates. This can lead to an Out-Of-Memory OOM error, causing the Grafana service to crash and resulting in a Deni...

grafana: Grafana: Denial of Service via uncontrolled memory usage in alertmanager templates

A flaw was found in Grafana. A remote attacker with very low privileges, or even anonymous access if enabled, can exploit the alertmanager templates test endpoint by mass-executing templates. This can lead to an Out-Of-Memory OOM error, causing the Grafana service to crash and resulting in a Deni...

grafana: Grafana: Denial of Service via uncontrolled memory usage in alertmanager templates

A flaw was found in Grafana. A remote attacker with very low privileges, or even anonymous access if enabled, can exploit the alertmanager templates test endpoint by mass-executing templates. This can lead to an Out-Of-Memory OOM error, causing the Grafana service to crash and resulting in a Deni...

Linux Distros Unpatched Vulnerability : CVE-2026-21723

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The alertmanager templates test endpoint /api/alertmanager/grafana/config/api/v1/templates/test can execute templates with no memory limits. Mass-executing...

CVE-2026-21723

A flaw was found in Grafana. A remote attacker with very low privileges, or even anonymous access if enabled, can exploit the alertmanager templates test endpoint by mass-executing templates. This can lead to an Out-Of-Memory OOM error, causing the Grafana service to crash and resulting in a Deni...

SUSE CVE-2026-21723

The alertmanager templates test endpoint /api/alertmanager/grafana/config/api/v1/templates/test can execute templates with no memory limits. Mass-executing templates in a short period causes OOM and crashes the Grafana service. The endpoint requires very low privileges and is exploitable with...

EUVD-2026-47869

The alertmanager templates test endpoint /api/alertmanager/grafana/config/api/v1/templates/test can execute templates with no memory limits. Mass-executing templates in a short period causes OOM and crashes the Grafana service. The endpoint requires very low privileges and is exploitable with...

CVE-2026-21723

The alertmanager templates test endpoint /api/alertmanager/grafana/config/api/v1/templates/test can execute templates with no memory limits. Mass-executing templates in a short period causes OOM and crashes the Grafana service. The endpoint requires very low privileges and is exploitable with...

PT-2026-63565

Name of the Vulnerable Software and Affected Versions Grafana affected versions not specified Description The alertmanager templates test endpoint '/api/alertmanager/grafana/config/api/v1/templates/test' allows the execution of templates without memory limits. Sending a large volume of template...

CVE-2021-31231

The Alertmanager in Grafana Enterprise Metrics before 1.2.1 and Metrics Enterprise 1.2.1 has a local file disclosure vulnerability when experimental.alertmanager.enable-api is used. The HTTP basic auth passwordfile can be used as an attack vector to send any file content via a webhook. The...

CVE-2021-31232: Undefined Security Weakness

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 passwordfile can be used as an attack vector to send any file content via a webhook. The alertmanager templates can be used as an attack...

CVE-2021-31231: Undefined Security Weakness

The Alertmanager in Grafana Enterprise Metrics before 1.2.1 and Metrics Enterprise 1.2.1 has a local file disclosure vulnerability when experimental.alertmanager.enable-api is used. The HTTP basic auth passwordfile can be used as an attack vector to send any file content via a webhook. The...