Dashboard / CVE-2026-21723

CVE-2026-21723

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 51/100
Published: 2026-07-23 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

Description

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 anonymous access enabled.

Weakness Classification (1)

References & Advisories (1)

Bug Bounty Relevance

51 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

5.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.21%
Raw Score 0.002150
Percentile 11.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00215
2026-10-28
0.00215

Intelligence Sources

nvd ref →

External Links