Resource exhaustion in Grafana - CVE-2026-27880
Published: March 31, 2026
Vulnerability identifier: #VU124707
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-27880
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Grafana Labs
Affected software:
Grafana
Grafana
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in the OpenFeature feature toggle evaluation endpoint when processing unbounded input data. A remote attacker can send a specially crafted request with large input values to cause a denial of service.
The issue can lead to out-of-memory crashes.
How to mitigate CVE-2026-27880
Install security update from vendor's website.