High 7.5Published Mar 27, 2026

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

Updated under an hour ago (Oct 28, 2026, 12:00 AM ET)

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It affects Grafana and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-125, CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GRAFANA
NVD analysis: Modified
Record last updated: Aug 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Grafana Grafana grafana:grafana (from the name)	from v12.1.0 before v12.1.10; from v12.2.0 before v12.2.8; from v12.3.0 before v12.3.6; from v12.4.0 before v12.4.2	CNA record
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	10	CISA ADP
grafana grafana grafana:grafana	before 12.1.0; from 12.1.10 before 12.2.0; from 12.2.8 before 12.3.0; from 12.3.6 before 12.4.0	NVD

References

References

https://grafana.com/security/security-advisories/cve-2026-27880	vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-27880
https://bugzilla.redhat.com/show_bug.cgi?id=2452295
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27880.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.