CVE-2026-27465
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fleetdm | fleet | to 4.80.1 (exc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
[{'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]
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
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.