🛡️ CVE-2026-27465 — fleet

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-201 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Fleet: Sensitive Google Calendar credentials disclosed to low-privileged users

Summary

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.

Impact

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.

Patches

  • v4.80.1

Workarounds

If an immediate upgrade is not possible, administrators should remove the Google Calendar integration from Fleet and rotate the affected Google service account credentials.

For more information

If there are any questions or comments about this advisory:

Email Fleet at [security@fleetdm.com](mailto:[email protected])

Join #fleet in [osquery Slack](https://join.slack.com/t/osquery/shared_invite/zt-h29zm0gk-s2DBtGUTW4CFel0f0IjTEw)

Credits

Fleet thanks @secfox-ai for responsibly reporting this issue.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Affected software

CVE-2026-27465 is recorded against 2 packages.

  • fleet (fixed in 4.80.1)
  • github.com/fleetdm/fleet/v4

Timeline and source

Published on 26 February 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com

Details

Severity MEDIUM
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE CWE-201
Public Exploit ✅ No
Source NVD
Published 2026-02-26
Updated 2026-08-12
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
fleet — 4.80.1
github.com/fleetdm/fleet/v4 — —

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