CVE-2026-88858 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Grafana	Grafana Grafana Enterprise

No data.

No data.

References

Link	Providers
https://grafana.com/security/security-advisories/cve-2026-88858

History

Wed, 28 Oct 2026 19:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Grafana Grafana grafana Grafana grafana Enterprise
Vendors & Products		Grafana Grafana grafana Grafana grafana Enterprise

Wed, 28 Oct 2026 17:00:00 +0000

Type	Values Removed	Values Added
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.
Title		Server-side expression parser denial of service
Weaknesses		CWE-20 CWE-400 CWE-674
References		https://grafana.com/security/security-advisories/cve-2026-88858
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}`

MITRE

Status: PUBLISHED

Assigner: GRAFANA

Published: 2026-10-28T16:50:17.291Z

Updated: 2026-10-28T16:50:17.291Z

Reserved: 2026-09-10T10:30:46.142Z

Link: CVE-2026-88858

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-10-28T17:18:45.967

Modified: 2026-10-28T17:18:45.967

Link: CVE-2026-88858

Redhat

No data.

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