Buffer overflow in Grafana

CVE-2026-27880

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

Vulnerability class: Buffer Overflow

EPSS: 0.000 (11.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Grafana — versions v12.1.0, v12.2.0, v12.3.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-27880?
CVE-2026-27880 is a high-severity vulnerability in Grafana, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2026-03-27.
How severe is CVE-2026-27880?
High severity. CVSS v3 base score is 7.5 out of 10.