{"type":"post","id":"default-filesessionmanager-storage-is-world-readable-on-shared-1ccc08","slug":"default-filesessionmanager-storage-is-world-readable-on-shared-1ccc08","title":"Default FileSessionManager storage is world-readable on shared systems","description":"Strands Agents patched a local confidentiality issue in its Python SDK's default `FileSessionManager` storage.","retrieval_nugget":"Strands Agents patched a local confidentiality issue in its Python SDK's default FileSessionManager storage. Before version 1.48.0, ordinary Unix permissions could leave persisted agent-session JSON readable by other local users on shared hosts. For builders, it makes filesystem ownership and modes part of the security design for agent memory.","published_at":"2026-10-30","updated_at":"2026-10-30","record_date":"2026-10-30","date_kind":"published_at","topics":["agent-memory"],"entities":["Strands Agents","Strands Harness SDK","FileSessionManager"],"related_patterns":["agent-security-moves-to-runtime-boundaries"],"novelty_label":"same_event","what_changed":"Same event as GitHub advisory GHSA-763v-5pjm-fx36: Strands Agents default session files were world-readable on shared systems","prior_refs":[],"source_url":"https://github.com/strands-agents/harness-sdk/security/advisories/GHSA-763v-5pjm-fx36","source_urls":["https://github.com/strands-agents/harness-sdk/security/advisories/GHSA-763v-5pjm-fx36"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:default-filesessionmanager-storage-is-world-readable-on-shared-1ccc08","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/default-filesessionmanager-storage-is-world-readable-on-shared-1ccc08/","markdown":"https://newruntime.com/posts/default-filesessionmanager-storage-is-world-readable-on-shared-1ccc08.md","json":"https://newruntime.com/posts/default-filesessionmanager-storage-is-world-readable-on-shared-1ccc08.json"},"next_reads":[{"type":"topic","path":"/topics/agent-memory/","url":"https://newruntime.com/topics/agent-memory/","title":"Agent Memory","reason":"Explore the agent-memory topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/agent-memory.md","json_url":"https://newruntime.com/topics/agent-memory.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"}]}