CVE-2026-88858

Medium

Description

A user with the Viewer role in Grafana can crash the server by submitting a crafted server-side math expression (uncontrolled recursion). A user with permission to provision alert rules can make the outage persist across restarts.

SeverityMedium

CVSS6.5

Exploit probability—

Product

Grafana OSS

PublishedOct 28, 2026

First seenNov 4, 2026

Weakness typeCWE-674CWE-674 CWE-20Improper input validation CWE-400Uncontrolled resource consumption

How to fix

Vendor advisories

grafana.com/security/security-advisories/cve-2026-88858

Affected products

Product	Affected versions	Fixed in
Grafana Grafana OSS	7.4.0 ≤ v ≤ 11.6.16, 12.0.0 ≤ v ≤ 12.2.10, 12.3.0 ≤ v ≤ 12.3.11, 12.4.0 ≤ v ≤ 12.4.13, 13.0.0 ≤ v ≤ 13.0.11, 13.1.0 ≤ v ≤ 13.1.8, 13.2.0 ≤ v ≤ 13.2.4	—
Grafana Grafana Enterprise	7.4.0 ≤ v ≤ 11.6.16, 12.0.0 ≤ v ≤ 12.2.10, 12.3.0 ≤ v ≤ 12.3.11, 12.4.0 ≤ v ≤ 12.4.13, 13.0.0 ≤ v ≤ 13.0.11, 13.1.0 ≤ v ≤ 13.1.8, 13.2.0 ≤ v ≤ 13.2.4	—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.