CVE-2026-27880 — Out-of-bounds Write in Grafana

CWE-787 — Out-of-bounds WriteCWE-770 — Allocation of Resources Without Limits or Throttling6 documents6 sources
Severity
7.5HIGHNVD
EPSS
0.0%
top 95.56%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Grafana
Timeline
PublishedMar 27

Description

The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can cause out-of-memory crashes.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶CVEListV5grafana/grafanav12.1.0 — v12.1.10+3
▶NVDgrafana/grafana12.1.10 — 12.2.0+3

🔴Vulnerability Details

3
CVEList
OpenFeature evaluation API reads input data with no bounds↗2026-03-27
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OSV
CVE-2026-27880: The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can cause out-of-memory crashes↗2026-03-27
▶
GHSA
GHSA-jmfj-8gxc-cg8c: The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can cause out-of-memory crashes↗2026-03-27
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📋Vendor Advisories

1
Red Hat
Grafana: Grafana: Denial of Service via unbounded memory read in feature toggle evaluation↗2026-03-27
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🕵️Threat Intelligence

1
Wiz
CVE-2026-27880 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2026-27880 — Out-of-bounds Write in Grafana | cvebase