CVE-2026-88858 — MEDIUM (6.5)

Vulnerability 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.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-674 CWE-400 CWE-20

References

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

FAQ

What is CVE-2026-88858?

CVE-2026-88858 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 o...

How severe is CVE-2026-88858?

CVE-2026-88858 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-88858?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.