OpenFeature evaluation API reads input data with no bounds
Priority MEDIUM 40CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.
Summary
The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can cause out-of-memory crashes.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00786 56th percentileScored 2026-11-07
Fix Partial Grafana (Grafana): v12.1.10, v12.2.8, v12.3.6 +1Red Hat: 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Grafana | Grafana | v12.1.0 to before v12.1.10; v12.2.0 to before v12.2.8; v12.3.0 to before v12.3.6; v12.4.0 to before v12.4.2 | v12.1.10, v12.2.8, v12.3.6, v12.4.2 | Patch available | CNA |
- Grafana VendorGrafana Affected v12.1.0 to before v12.1.10; v12.2.0 to before v12.2.8; v12.3.0 to before v12.3.6; v12.4.0 to before v12.4.2 Fixed in v12.1.10, v12.2.8, v12.3.6, v12.4.2 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* | before 12.1.0; 12.1.10 to before 12.2.0; 12.2.8 to before 12.3.0; 12.3.6 to before 12.4.0 | Vulnerable | Grafana |
- cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* Versions before 12.1.0; 12.1.10 to before 12.2.0; 12.2.8 to before 12.3.0; 12.3.6 to before 12.4.0 Vulnerable ·Grafana
Remediation
- Fix · CNA Grafana (Grafana) Fixed in v12.1.10, v12.2.8, v12.3.6, v12.4.2
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
Not affected: 1 product
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-27880
- 2026-10-03 Alias added: GHSA-jmfj-8gxc-cg8c
- 2026-10-24 EPSS moved to the 50th–90th percentile
References
More Grafana vulnerabilities
- TI-2021-16611 Snapshot authentication bypass in grafana KEVCVSS 3.1CRITICAL 9.8
- TI-2021-19604 Grafana path traversal KEVCVSS 3.1HIGH 7.5
- TI-2024-08600 Grafana SQL Expressions allow for remote code execution CVSS 4.0CRITICAL 9.4
- TI-2023-02931 Authentication bypass by spoofing in Grafana CVSS 3.1CRITICAL 9.8
- TI-2020-10491 The avatar feature in Grafana 3.0.1 through 7.0.1 has an SSRF Incorrect Access Control… CVSS 3.1HIGH 8.2
- TI-2025-03662 Open redirect in Grafana CVSS 3.1HIGH 7.6
Sources
- CVE-2026-27880 · CVE Program
- CVE-2026-27880 · NVD
- FIRST EPSS
- GHSA-jmfj-8gxc-cg8c · GitHub Advisory Database · CC BY 4.0
- CVE-2026-27880 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences