{"type":"post","id":"post-mortem-on-command-execution-in-file-browser-c76fa7","slug":"post-mortem-on-command-execution-in-file-browser-c76fa7","title":"Post-Mortem on Command Execution in File Browser","description":"File Browser’s maintainer explains why its command-execution features produced repeated security advisories and why the project disabled them by default in v2.33.8.","retrieval_nugget":"File Browser’s maintainer explains why its command-execution features produced repeated security advisories and why the project disabled them by default in v2.33.8. For AI builders, the important lesson is architectural: UI-level permissions, regex allowlists, and folder scoping do not constrain a command that runs with the server’s real operating-system privileges.","published_at":"2026-10-30","updated_at":"2026-10-30","record_date":"2026-10-30","date_kind":"published_at","topics":["agent-security","sandbox"],"entities":["File Browser","Caddy","Hugo"],"related_patterns":["agent-security-moves-to-runtime-boundaries"],"novelty_label":"new_fact","what_changed":"The File Browser developer provides a post-mortem on how its command-execution and hooks features developed and contributed to security issues; no prior covers this project.","prior_refs":[],"source_url":"https://hacdias.com/2026/10/27/command-execution","source_urls":["https://hacdias.com/2026/10/27/command-execution"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:post-mortem-on-command-execution-in-file-browser-c76fa7","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/post-mortem-on-command-execution-in-file-browser-c76fa7/","markdown":"https://newruntime.com/posts/post-mortem-on-command-execution-in-file-browser-c76fa7.md","json":"https://newruntime.com/posts/post-mortem-on-command-execution-in-file-browser-c76fa7.json"},"next_reads":[{"type":"topic","path":"/topics/agent-security/","url":"https://newruntime.com/topics/agent-security/","title":"Agent Security","reason":"Explore the agent-security topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/agent-security.md","json_url":"https://newruntime.com/topics/agent-security.json"},{"type":"topic","path":"/topics/sandbox/","url":"https://newruntime.com/topics/sandbox/","title":"Sandbox","reason":"Explore the sandbox topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/sandbox.md","json_url":"https://newruntime.com/topics/sandbox.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}