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

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

Published: 2026-03-27 Last update: 2026-05-10 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-27880 is rated Low Risk (30.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.01%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-27880

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-28 — 0.01% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-27880

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2026-27880

GitHub Security Advisory for CVE-2026-27880

GHSA-jmfj-8gxc-cg8c · Severity: high — The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can...

OS Trackers for CVE-2026-27880

vendor priority summary link
alpine — CVE-2026-27880: 1 source package rows (grafana); 30 state rows across 1 repos (edge-community); fixed 0, open 30. https://security.alpinelinux.org/vuln/CVE-2026-27880
redhat high — https://access.redhat.com/security/cve/CVE-2026-27880
suse high CVE-2026-27880 severity important: SUSE including 1 source package names (grafana), 4 product×package rows across 4 product lines (SUSE Linux Enterprise Module for Package Hub 15 SP7, SUSE Manager Client Tools for SLE 15, SUSE Multi-Linux Manager Client Tools for SLE 15, openSUSE Leap 15.6): Known Not Affected 4. https://www.suse.com/security/cve/CVE-2026-27880/
ubuntu medium CVE-2026-27880 medium priority: Ubuntu including 1 source packages (grafana), 5 status rows across 5 suites (jammy, noble, questing, upstream, xenial): DNE 3, needs-triage 2. https://ubuntu.com/security/CVE-2026-27880

Affected software / configurations for CVE-2026-27880

Vendor Product Version Raw CPE
grafana grafana < 12.1.0 cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
grafana grafana >= 12.1.10, < 12.2.0 cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
grafana grafana >= 12.2.8, < 12.3.0 cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
grafana grafana >= 12.3.6, < 12.4.0 cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*

References for CVE-2026-27880

cvelogic Threat Intelligence