What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-27 · updated 2026-07-15
• Weakness: CWE-787

Description

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

Affected products

• 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 — fixed in 12.1.0, 12.2.0, 12.3.0, 12.4.0

How to fix

Upgrade to a fixed version: Grafana 12.1.0, 12.2.0, 12.3.0, 12.4.0. Check the vendor advisory for mitigations.

References

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

Get alerted when CVE-2026-27880 or the next vulnerability affects your stack