CVE-2026-26061: high-severity vulnerability in fleetdm fleet
Fleet's unbounded request body read allows remote Denial of Service
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.5%
Fleet is open source device management software. Prior to 4.81.0, Fleet contained multiple unauthenticated HTTP endpoints that read request bodies without enforcing a size limit. An unauthenticated attacker could exploit this behavior by sending large or repeated HTTP payloads, causing excessive memory allocation and resulting in a denial-of-service (DoS) condition. Version 4.81.0 patches the issue.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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%