CyberRota Analysis
AI-GeneratedThe vulnerability affects Fleet-maintained app install and uninstall scripts for macOS, which improperly handle shell metacharacters in Homebrew cask metadata, potentially allowing an attacker to execute arbitrary commands as root on managed macOS hosts. Organizations using Fleet to manage macOS applications should prioritize addressing this issue, especially those relying on manifests generated before August 19, 2026, to mitigate the risk of unauthorized command execution. The vulnerability has been resolved in Fleet version 4.92.0, which ensures proper escaping of metadata in all future script generations.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Fleet-maintained app install and uninstall scripts for macOS are generated from Homebrew cask metadata. In manifests generated before 2026-08-19, the script generator escaped this metadata at some interpolation sites but not all of them, so cask metadata containing shell metacharacters (for example $(...) command substitution) could be carried into scripts that execute as root on managed macOS hosts. An attacker who could land crafted metadata in an upstream Homebrew cask — without needing any Fleet credentials — could achieve arbitrary command execution as root on managed macOS hosts that install or uninstall the affected Fleet-maintained app; exploitation required the crafted metadata to pass both upstream Homebrew cask review and Fleet's review of the automated ingestion pull request. The fix (fleetdm/fleet#51324) landed in Fleet's ingestion pipeline on 2026-08-19 so that all manifests generated on or after that date escape cask metadata at every interpolation site; because manifests are generated centrally and distributed as pre-built content, remediation applied to all deployments with no customer action, and the code fix is included in Fleet v4.92.0.