What is the CVSS score of CVE-2026-27880?

CVE-2026-27880 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Which versions of Grafana are affected by CVE-2026-27880?

Grafana deployments are vulnerable to unauthenticated remote denial-of-service attacks through the OpenFeature toggle evaluation endpoint, which can be exhausted by unbounded input values, causing…. A patch is available.

How to fix or mitigate CVE-2026-27880?

Within 24 hours: Identify all Grafana instances exposing the OpenFeature endpoint and document their network accessibility; assess whether this feature is actively used in your environment. Within 7 days: Implement network segmentation to restrict access to the OpenFeature endpoint to trusted internal systems only, and deploy WAF rules to rate-limit and validate requests to this endpoint. Within 30 days: Monitor Grafana security advisories for patch availability and establish a change control process to apply patches immediately upon release; evaluate disabling the OpenFeature feature toggle if not operationally required.

Grafana CVE-2026-27880

EUVD-2026-16598 HIGH

Out-of-bounds Write (CWE-787)

2026-03-27 GRAFANA

Buffer Overflow Memory Corruption Grafana

7.5

CVSS 3.1 · Vendor: GRAFANA

Severity by source

Vendor (GRAFANA) PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SUSE

HIGH

qualitative

Red Hat

7.5 HIGH

qualitative

Primary rating from Vendor (GRAFANA).

CVSS VectorVendor: GRAFANA

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Patch released

Apr 10, 2026 - 08:30 nvd

Patch available

EUVD ID Assigned

Mar 27, 2026 - 14:30 euvd

EUVD-2026-16598

Analysis Generated

Mar 27, 2026 - 14:30 vuln.today

CVE Published

Mar 27, 2026 - 14:12 nvd

HIGH 7.5

DescriptionCVE.org

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

AnalysisAI

Grafana's OpenFeature feature toggle evaluation endpoint can be forced into an out-of-memory condition by submitting unbounded values, enabling remote denial-of-service attacks against the monitoring platform. The vulnerability is network-accessible, requires no authentication (CVSS AV:N/AC:L/PR:N), and has been assigned a CVSS score of 7.5 with high availability impact. No public exploit identified at time of analysis, and authentication requirements confirm unauthenticated access per the CVSS vector PR:N.

Technical ContextAI

This vulnerability affects Grafana's implementation of OpenFeature, an open specification for feature flag management that enables dynamic configuration changes without redeployment. The affected component is the feature toggle evaluation endpoint, which processes feature flag evaluation requests. According to the CPE identifier cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*, the vulnerability resides in Grafana's core application. The root cause is unbounded memory allocation when processing input values during feature toggle evaluation, allowing attackers to exhaust available memory resources by submitting specially crafted evaluation requests with oversized payloads. While no specific CWE classification is provided, this represents a classic resource exhaustion vulnerability pattern common in services that fail to impose limits on user-controlled input size.

RemediationAI

Consult the official Grafana security advisory at https://grafana.com/security/security-advisories/cve-2026-27880 for patch details and specific upgrade instructions, as the exact fixed version is not specified in available intelligence sources. Until patching is complete, implement network-level access controls to restrict exposure of the OpenFeature evaluation endpoint to trusted IP ranges only, preferably limiting access to internal networks. Deploy rate limiting and request size restrictions at the reverse proxy or web application firewall layer to mitigate unbounded memory allocation attempts. Monitor Grafana instances for abnormal memory consumption patterns and configure restart policies to maintain service availability during potential exploitation attempts.

More in Grafana

View all

CVE-2023-34111 CRITICAL Act Now POC

9.8 Jun 06

The `Release PR Merged` workflow in the github repo taosdata/grafanaplugin is subject to a command injection vulnerabili

CVE-2022-26148 CRITICAL Act Now POC

9.8 Mar 21

An issue was discovered in Grafana through 7.3.4, when integrated with Zabbix. Rated critical severity (CVSS 9.8), this

CVE-2020-27846 CRITICAL Act Now POC

9.8 Dec 21

A signature verification vulnerability exists in crewjam/saml. Rated critical severity (CVSS 9.8), this vulnerability is

CVE-2018-15727 CRITICAL Act Now POC

9.8 Aug 29

Grafana 2.x, 3.x, and 4.x before 4.6.4 and 5.x before 5.2.3 allows authentication bypass because an attacker can generat

CVE-2024-9264 CRITICAL Act Now POC

9.4 Oct 18

The SQL Expressions experimental feature of Grafana allows for the evaluation of `duckdb` queries containing user input.

CVE-2026-63087 CRITICAL Monitor POC

9.3 Jul 16

Authentication bypass in Grafana OnCall through 1.16.11 lets unauthenticated remote attackers mint a valid PluginAuthTok

CVE-2023-36649 CRITICAL Act Now POC

9.1 Dec 12

Insertion of sensitive information in the centralized (Grafana) logging system in ProLion CryptoSpike 3.0.15P2 allows re

CVE-2025-4123 HIGH This Week POC

7.6 May 22

A cross-site scripting (XSS) vulnerability exists in Grafana caused by combining a client path traversal and open redire

CVE-2020-13379 HIGH This Week POC

8.2 Jun 03

The avatar feature in Grafana 3.0.1 through 7.0.1 has an SSRF Incorrect Access Control issue. Rated high severity (CVSS

CVE-2023-1387 HIGH This Week POC

7.5 Apr 26

Grafana is an open-source platform for monitoring and observability. Rated high severity (CVSS 7.5), this vulnerability

CVE-2022-32276 HIGH This Week POC

7.5 Jun 17

Grafana 8.4.3 allows unauthenticated access via (for example) a /dashboard/snapshot/*?orgId=0 URI. Rated high severity (

CVE-2022-32275 HIGH This Week POC

7.5 Jun 06

Grafana 8.4.3 allows reading files via (for example) a /dashboard/snapshot/%7B%7Bconstructor.constructor'/.. Rated high

Same weakness CWE-787 – Out-of-bounds Write

View all

CVE-2015-3113 CRITICAL POC

9.8

CVE-2011-2462 CRITICAL POC

9.8

CVE-2012-1889 HIGH POC

8.8

CVE-2010-3333 HIGH POC

7.8

CVE-2014-1761 HIGH POC

7.8

CVE-2009-3129 HIGH POC

7.8

CVE-2021-1732 HIGH POC

7.8

CVE-2013-3346 CRITICAL POC

9.8

Same technique Buffer Overflow

View all

CVE-2017-7269 CRITICAL POC

9.8

CVE-2015-5119 CRITICAL POC

9.8

CVE-2015-3113 CRITICAL POC

9.8

CVE-2011-2462 CRITICAL POC

9.8

CVE-2009-0927 HIGH POC

8.8

CVE-2012-1889 HIGH POC

8.8

CVE-2017-11882 HIGH POC

7.8

CVE-2010-3333 HIGH POC

7.8

Vendor StatusVendor

SUSE

Severity: High

Product	Status
SUSE Linux Enterprise Module for Package Hub 15 SP7	Fixed
SUSE Manager Client Tools 15	Fixed
SUSE Manager Client Tools for SLE 15	Fixed
SUSE Multi-Linux Manager Client Tools for SLE 15	Fixed
openSUSE Leap 15.6	Fixed

CVE-2026-27880 vulnerability details – vuln.today

Back

Grafana CVE-2026-27880

Severity by source

CVSS VectorVendor: GRAFANA

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

More in Grafana

Same weakness CWE-787 – Out-of-bounds Write

Same technique Buffer Overflow

Vendor StatusVendor

SUSE

Share

External POC / Exploit Code