CVE-2026-34389: medium-severity vulnerability in fleetdm fleet
Fleet's user account creation via invite does not enforce invited email address
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.9epss 0.2%
Fleet is open source device management software. Prior to 4.81.0, Fleet contained an issue in the user invitation flow where the email address provided during invite acceptance was not validated against the email address associated with the invite. An attacker who obtained a valid invite token could create an account under an arbitrary email address while inheriting the role granted by the invite, including global admin. Version 4.81.0 patches the issue.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Affected products
fleetdm · fleetRelated CVEs — fleetdm fleet
In the same product, most dangerous first.
CVE-2020-26276CRITICALSAML authentication vulnerability in FleetEPSS 2.2%CVE-2021-21296LOWDenial-of-service in FleetEPSS 2.0%CVE-2026-34387MEDIUMFleet vulnerable to OS command injection via crafted software package metadata in uninstall scriptsEPSS 1.3%CVE-2022-23600MEDIUMLimited ability to spoof SAML authentication with missing audience verificationEPSS 0.9%CVE-2022-24841MEDIUMImproper Authorization in github.com/fleetdm/fleetEPSS 0.8%CVE-2026-26191MEDIUMFleet vulnerable to OS command injection in software packagesEPSS 0.8%