Vulnerability · Published Mar 27, 2026 · Assigned by GRAFANA

CVE-2026-27880OpenFeature evaluation API reads input data with no bounds

High 7.5

In plain English

A high-severity out-of-bounds read in Grafana from Grafana. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.8%top 43.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Alpine:v3.23	grafana	12.2.8-r0	ALPINE-CVE-2026-27880
Alpine:v3.24	grafana	12.4.3-r0	ALPINE-CVE-2026-27880

Affected products (as reported)

Vendor	Product	Versions
Grafana	Grafana	v12.1.0 – before v12.1.10v12.2.0 – before v12.2.8v12.3.0 – before v12.3.6v12.4.0 – before v12.4.2

Weakness: CWE-125, CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://grafana.com/security/security-advisories/cve-2026-27880 vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-27880 vdb-entry, x_refsource_REDHAT
RHBZ#2452295 issue-tracking, x_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27880.json x_sadp-csaf-vex