CyberSecBulletin
CVE-2026-102589NVD status: Awaiting Analysis

Grafana OSS: Exposure of Sensitive Information to an Unauthorized Actor

Published Updated By the CyberSecBulletin desk

CVE-2026-102589 is a high-severity exposure of sensitive information to an unauthorized actor vulnerability in Grafana OSS from Grafana, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected Grafana OSS versions: 9.5.0 through 12.3.11; 12.4.0 through 12.4.14; 13.0.0 through 13.0.12, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.16% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Check which version of Grafana OSS you run against the affected versions below, and install the vendor's latest release.
  2. Read the advisory on grafana.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
GrafanaGrafana OSS9.5.0 through 12.3.11; 12.4.0 through 12.4.14; 13.0.0 through 13.0.12; 13.1.0 through 13.1.9; 13.2.0 through 13.2.5; 13.3.0 and earlierNot stated
GrafanaGrafana Enterprise9.5.0 through 12.3.11; 12.4.0 through 12.4.14; 13.0.0 through 13.0.12; 13.1.0 through 13.1.9; 13.2.0 through 13.2.5; 13.3.0 and earlierNot stated

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
HighSuccess depends on conditions outside the attacker's control.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
LowPerformance or availability is reduced.

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L. Scored by CNA (grafana.com).

Official description

When independent Grafana instances share the same [rendering] renderer_token, an image renderer key issued by one instance is accepted by the others, so a user on one instance could act as the user with the same ID on another (origin validation error). This affects instances with the renderAuthJWT feature toggle enabled, the default from Grafana 13.0.0.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

How developers prevent this class of flaw

  • Compartmentalize the system to have safe areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

More Exposure of Sensitive Information to an Unauthorized Actor vulnerabilities (CWE-200)

Timeline

  1. CVE record published.
  2. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in Grafana OSS

All Grafana OSS vulnerabilities

Recent Exposure of Sensitive Information to an Unauthorized Actor vulnerabilities

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