{"cve":"CVE-2026-34389","nvd":{"published":"2026-03-27T20:16:35.957","modified":"2026-10-26T21:10:00.170","status":"Analyzed","description":"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_v4":{"vector":"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","score":4.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","score":6.5},"cwes":["CWE-287"],"references":["https://github.com/fleetdm/fleet/security/advisories/GHSA-4f9r-x588-pp2h"],"products":["fleetdm:fleet"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-34389","score":0.00192,"percentile":0.08724,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-4f9r-x588-pp2h","url":"https://osv.dev/vulnerability/GHSA-4f9r-x588-pp2h","summary":"Fleet's user account creation via invite does not enforce invited email address","modified":"2026-04-02T21:26:23.829275910Z","packages":[{"ecosystem":"Go","name":"github.com/fleetdm/fleet/v4","purl":"pkg:golang/github.com/fleetdm/fleet/v4","ranges":["<4.81.0"],"fixed":["4.81.0"]}]},{"id":"GO-2026-4912","url":"https://osv.dev/vulnerability/GO-2026-4912","summary":"Fleet's user account creation via invite does not enforce invited email address in github.com/fleetdm/fleet","modified":"2026-04-02T21:20:08.632482Z","packages":[{"ecosystem":"Go","name":"github.com/fleetdm/fleet/v4","purl":"pkg:golang/github.com/fleetdm/fleet/v4","ranges":["<4.81.0"],"fixed":["4.81.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}