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

> CVE-2026-27880: OpenFeature evaluation API reads input data with no bounds. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-27880
Last updated: 2026-08-27T17:22:49Z

- Published: 2026-03-27 14:12 UTC · Updated: 2026-08-27 17:22 UTC · Assigner: GRAFANA
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.79%, 56th percentile (scored 2026-10-25)
- CISA KEV: no

## Description

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

## Affected vendors and products

- Grafana: Grafana
- Red Hat: Red Hat Enterprise Linux 10
- Red Hat: Red Hat Enterprise Linux 8
- Red Hat: Red Hat Enterprise Linux 9

## Tracked companies

- [Grafana Cloud](https://rewindex.com/company/grafana-cloud.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-27880)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-27880)
- [https://grafana.com/security/security-advisories/cve-2026-27880](https://grafana.com/security/security-advisories/cve-2026-27880)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-27880 · Markdown: https://rewindex.com/cve/CVE-2026-27880.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-27880 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:04:42.224Z