{"items":[{"id":"NVI-00017811","kind":"vulnerability","title":"@anthropic-ai/claude-code has an Insecure Temporary File in /copy Command that Enables Response Disclosure and Symlink-Based File Write","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4vp2-6q8c-pvq2","CVE-2026-46406"],"plain_summary":"GitHub lists this reviewed advisory for @anthropic-ai/claude-code. 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-6bb1f15f433e9a87288c34e39e3eefbc"],"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-6bb1f15f433e9a87288c34e39e3eefbc","url":"https://github.com/advisories/GHSA-4vp2-6q8c-pvq2","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4vp2-6q8c-pvq2","publisher":"GitHub Advisory Database","observed_at":"2026-11-05T19:06:16.668Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6bb1f15f433e9a87288c34e39e3eefbc"],"technology":"@anthropic-ai/claude-code","known_exclusions":[],"conditions_summary":"The Claude Code `/copy` command wrote responses to a hardcoded, predictable path (`/tmp/claude/response.md`) without UID isolation, randomness, or symlink protection. The file was created world-readable (0644) in a world-traversable directory (0755), allowing any local user to read a privileged user's Claude response, which could contain secrets or credentials. Additionally, because the path was static and predictable, a local attacker could pre-create the directory and plant a symlink at the expected file path, causing the privileged process to follow the symlink and overwrite an attacker-chosen file with the response text. Exploiting this required a local unprivileged user on the same system and a privileged user to run the `/copy` command.\n\nUsers on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to the latest version.\n\nClaude Code thanks hackerone.com/c_h4ck_0 for reporting this issue.","public_affected_ranges":[">= 2.1.59, < 2.1.128"]}],"null_published_at":"2026-11-05T19:10:21.471Z","source_updated_at":"2026-06-25T16:53:03.000Z","source_disclosed_at":"2026-06-25T16:53:00.000Z","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":"2026-11-05T19:06:16.668Z"}],"next_cursor":null,"snapshot_revision":"42594"}