CVE-2026-27465
Received Received - Intake
Information Disclosure in Fleet Configuration API Exposes Google Calendar Credentials

Publication date: 2026-02-26

Last updated on: 2026-03-02

Assigner: GitHub, Inc.

Description
Fleet is open source device management software. In versions prior to 4.80.1, a vulnerability in Fleet’s configuration API could expose Google Calendar service account credentials to authenticated users with low-privilege roles. This may allow unauthorized access to Google Calendar resources associated with the service account. Fleet returns configuration data through an API endpoint that is accessible to authenticated users, including those with the lowest-privilege “Observer” role. In affected versions, Google Calendar service account credentials were not properly obfuscated before being returned. As a result, a low-privilege user could retrieve the service account’s private key material. Depending on how the Google Calendar integration is configured, this could allow unauthorized access to calendar data or other Google Workspace resources associated with the service account. This issue does not allow escalation of privileges within Fleet or access to device management functionality. Version 4.80.1 patches the issue. If an immediate upgrade is not possible, administrators should remove the Google Calendar integration from Fleet and rotate the affected Google service account credentials.
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Meta Information
Published
2026-02-26
Last Modified
2026-03-02
Generated
2026-06-16
AI Q&A
2026-02-26
EPSS Evaluated
2026-06-14
NVD
CVE-2026-27465
EUVD
EUVD-2026-8829
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
fleetdm fleet to 4.80.1 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-201 The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.
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Executive Summary

[{'type': 'paragraph', 'content': 'CVE-2026-27465 is a vulnerability in Fleet\'s configuration API affecting versions prior to 4.80.1. It allows authenticated users with low-privilege roles, such as the "Observer" role, to access sensitive Google Calendar service account credentials.'}, {'type': 'paragraph', 'content': "The issue arises because the API endpoint that returns configuration data does not properly obfuscate the Google Calendar service account's private key material before returning it. As a result, low-privilege users can retrieve these credentials."}, {'type': 'paragraph', 'content': 'This could potentially enable unauthorized access to Google Calendar data or other Google Workspace resources associated with the service account. However, this vulnerability does not allow privilege escalation within Fleet or access to device management functionality.'}] [1]

Impact Analysis

This vulnerability can impact you by allowing low-privilege authenticated users to obtain Google Calendar service account credentials.

With these credentials, unauthorized users could access Google Calendar data or other Google Workspace resources linked to the service account, potentially leading to data exposure or misuse.

However, it does not allow attackers to escalate privileges within Fleet or access device management features.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability immediately, administrators should upgrade Fleet to version 4.80.1 or later, where the issue is resolved.

If an immediate upgrade is not possible, administrators should remove the Google Calendar integration from Fleet.

Additionally, rotate the affected Google service account credentials to prevent unauthorized access.

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