CRITICAL9.3

GO-2025-3505

Fleet has SAML authentication vulnerability due to improper SAML response validation in github.com/fleetdm/fleet

Details

Fleet has SAML authentication vulnerability due to improper SAML response validation in github.com/fleetdm/fleet.

NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.

(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)

The additional affected modules and versions are: github.com/fleetdm/fleet/v4 before v4.53.2, from v4.54.0 before v4.58.1, from v4.62.0 before v4.62.4, from v4.63.0 before v4.63.2, from v4.64.0 before v4.64.2.

Are you affected?

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Affected packages

Go/github.com/fleetdm/fleet/v4

Introduced in: 0

No fixed version published yet for github.com/fleetdm/fleet/v4 (go modules). Pin to a known-safe version or switch to an alternative.

References

https://github.com/fleetdm/fleet/security/advisories/GHSA-52jx-g6m5-h735[ADVISORY]
https://nvd.nist.gov/vuln/detail/CVE-2025-27509[ADVISORY]
https://github.com/fleetdm/fleet/commit/718c95e47ad010ad6b8ceb3f3460e921fbfc53bb[WEB]
https://github.com/fleetdm/fleet/releases/tag/fleet-v4.64.2[WEB]