CVE-2026-100105
Description
A flaw was found in Grafana. An authenticated user with permission to edit alert contact points can bypass field-level authorization restrictions by switching an integration to a legacy schema version. This flaw allows the user to alter protected settings such as destination URLs, potentially leading to information disclosure through exposed credentials and the redirection of alert notifications.
Statement
This vulnerability is rated as Important severity because an authenticated account granted low-privilege editing rights can cross authorization boundaries to exfiltrate sensitive secrets and manipulate alerting endpoints. In typical Red Hat environments, Grafana instances manage notification channels containing embedded authentication tokens and webhook targets for monitoring infrastructure. While standard users lacking alerting privileges cannot trigger this issue, any identity permitted to manage notification channels can circumvent field-level protections through legacy configuration formats, risking the compromise of external service credentials.
Mitigation
Limit Grafana alerting contact-point create/edit permissions to trusted administrators only. Restrict access to the Grafana management UI and Alerting APIs to trusted networks; rotate contact-point secrets if unauthorized edits are suspected.
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).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.7 | N/A | 7.7 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Changed | N/A | Changed |
| Confidentiality | High | N/A | High |
| Integrity Impact | None | N/A | None |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
cve.org: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Application Data
An attacker could modify sensitive data or program variables.
Integrity
Technical Impact: Execute Unauthorized Code or Commands
Other,Integrity
Technical Impact: Varies by Context; Alter Execution Logic
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