Grafana 9.3.0 < 11.6.14 / 12.0.0 < 12.1.10 / 12.2.0 < 12.2.8 / 12.3.0 < 12.3.6 / 12.4.0 < 12.4.2 Information Disclosure (CVE-2026-27877)

high Nessus Plugin ID 304687

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Synopsis

The remote host is affected by an information disclosure vulnerability.

Description

The version of Grafana installed on the remote host is 9.3.x through 11.6.x prior to 11.6.14, 12.0.x through 12.1.x prior to 12.1.10, 12.2.x prior to 12.2.8, 12.3.x prior to 12.3.6, or 12.4.x prior to 12.4.2. It is, therefore, affected by an information disclosure vulnerability:

- When using public dashboards and direct data-sources, all direct data-sources' passwords are exposed despite not being used in dashboards. No passwords of proxied data-sources are exposed. (CVE-2026-27877)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update Grafana to 11.6.14, 12.1.10, 12.2.8, 12.3.6, 12.4.2 or later.

Plugin Details

Severity: High

ID: 304687

File Name: grafana_CVE-2026-27877.nasl

Version: 1.3

Type: Remote

Family: Web Servers

Published: 4/2/2026

Updated: 4/6/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2026-27877

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:grafana:grafana

Exploit Ease: No known exploits are available

Patch Publication Date: 3/30/2026

Vulnerability Publication Date: 3/30/2026

Reference Information

CVE: CVE-2026-27877

IAVB: 2026-B-0079

Detections

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