{"items":[{"id":"NVI-00009192","kind":"vulnerability","title":"Strands Agents: Default FileSessionManager storage is world-readable on shared systems","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-763v-5pjm-fx36"],"plain_summary":"GitHub lists this reviewed advisory for strands-agents. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-ea6d8c11c7fad26a474167be2ba8839c"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-ea6d8c11c7fad26a474167be2ba8839c","url":"https://github.com/advisories/GHSA-763v-5pjm-fx36","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-763v-5pjm-fx36","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T21:56:51.534Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-ea6d8c11c7fad26a474167be2ba8839c"],"technology":"strands-agents","known_exclusions":[],"conditions_summary":"There is a local confidentiality issue in the default `FileSessionManager` storage behavior. By default it writes session data under `/tmp/strands/sessions` and relies on the process umask for directory and file permissions. On systems using the common `umask 022`, the session directories are `0755` and JSON files are `0644`, so other local users can read persisted agent session data.\n\nThis matters on shared developer machines, CI hosts, notebooks, jump boxes, and multi-user GPU servers. Session storage is intended to persist conversation/history/state, so it can contain prompts, model output, tool inputs/outputs, intermediate state, and secrets that pass through the agent.\n\nRelevant code:\n- `strands-py/src/strands/session/file_session_manager.py:58`: default storage path is `os.path.join(tempfile.gettempdir(), \"strands/sessions\")`.\n- `strands-py/src/strands/session/file_session_manager.py:118`: creates parent directories without a private mode.\n- `strands-py/src/strands/session/file_session_manager.py:121`: writes JSON files via normal `open(..., \"w\")`.\n- `strands-py/src/strands/session/file_session_manager.py:131`: creates session directories without a private mode.\n\nLocal reprod","public_affected_ranges":["< 1.48.0"]}],"null_published_at":"2026-10-31T22:13:31.289Z","source_updated_at":"2026-10-27T15:34:28.000Z","source_disclosed_at":"2026-10-27T15:34:28.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:56:51.534Z"}],"next_cursor":null,"snapshot_revision":"42594"}