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wordcraft/docs
Martin BallandClaude Opus 5.5 a9cc06dc0f #3692: Zotero client talks only to this computer and, on Linux, only to our own user
Audit finding 21 (CWE-306): run_command handed document callback authority to
whatever accepted the TCP connection. Zotero's protocol is fixed and has no
authentication, so WordCraft now establishes what it can about the peer itself:
- the address must be loopback, refused before connecting (ZoteroError::Refused);
- on Linux/Android, before the command is sent, the kernel socket table
  (/proc/net/tcp, tcp6) must show the listener's end of this connection owned
  by the same UID as ours; another user's listener, or one whose owner can't be
  established, is refused. No unsafe, no new dependencies.
macOS, Windows and the BSDs have no such table without OS calls; there the
loopback rule is the guard. The residual risk is documented in docs/zotero.md.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-25 23:49:08 +00:00
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