CVE-2026-110289
Description
A flaw was found in Grafana. This vulnerability allows an authenticated organization administrator to cause information disclosure by configuring Git Sync connection endpoints to point to loopback or internal network addresses. Under these conditions, Grafana transmits the connection credentials to the specified internal address, exposing sensitive authentication data.
Statement
This vulnerability is rated as Moderate because successful exploitation requires pre-existing organization administrator privileges to configure Git integration targets, limiting the scope of attack to privileged roles. In affected environments using Git Sync or gitOAuth connections, Grafana may transmit authentication secrets to internal or loopback addresses if improperly configured. Environments that do not utilize Git Sync features or where administrative access is tightly controlled remain protected from credential exposure.
Mitigation
Audit existing Git Sync and OAuth connector configurations within the Grafana administrative interface to verify that all connection URLs point exclusively to trusted, external repositories rather than loopback or internal network destinations.
Additionally, enforce egress network filtering on the host or container network to restrict outbound traffic from the Grafana process to internal subnets and local loopback addresses, allowing connections only to verified Git server hosts.
Caveat: Restricting outbound network traffic may disrupt legitimate connections to internal data sources, alert endpoints, or local authentication providers if network filtering rules are overly restrictive.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | N/A | 5.5 |
| Attack Vector | Local | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | High |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Changed |
| Confidentiality | None | N/A | Low |
| Integrity Impact | None | N/A | Low |
| Availability Impact | High | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Application Data
Integrity
Technical Impact: Execute Unauthorized Code or Commands
Access Control
Technical Impact: Bypass Protection Mechanism
By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.
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