Release 0.17.3 from 17.06.2026

[Apollon77]

0.17.3 (2026-06-17)

• @matter/general

  • Fix: log.level (e.g. MATTER_LOG_LEVEL) now accepts string level names like info again, not just numeric values
  • Fix: A failed UDP multicast send now evicts and rebuilds the broadcast channel instead of caching a dead socket
  • Fix: SPAKE2+ now samples the ephemeral scalar bounded by the group order n instead of the field prime p

• @matter/model

  • Fix: Changed interaction model revision back to 12 because revision 13 only includes a provisional feature

• @matter/node

  • Fix: Reading CommissioningServer pairing codes before commissioning is initialized now throws a clear error instead of emitting a placeholder code
  • Fix: Ensures that the negotiated subscription MaxInterval stays at or above the requested MinIntervalFloor when the floor exceeds the 60-minute publisher limit
  • Fix: Ensures that a repeated atomic-write BeginWrite from the same client on a cluster/endpoint returns INVALID_IN_STATE for any attributes

• @matter/protocol

  • Fix: Ensures that the peer-medium-specific additionalMrpDelay is also used for executed commands, and added an optional per-request additionalMrpDelay override
  • Adjustment: MRP now selects the active/idle retransmission interval by peer activity for every transmission including the first, instead of forcing the first transmission to the idle interval
  • Fix: Prevents a crash when a PASE pairing timeout fires while a previous message is still awaiting acknowledgement
  • Fix: A discovery kick no longer restarts an in-flight CASE handshake when a restart would barely shorten the next retransmission, avoiding needless teardown of a sleepy peer's exchange
  • Fix: The MRP retransmission interval is no longer capped below the peer's idle interval
  • Fix: The connection fallback address is now compared by value, so a rediscovered last-known address is no longer mistaken for an address change
  • Fix: Ensures that subscriptions established through an interaction are closed when the interaction closes (e.g. node disable/disconnect or decommission)
  • Fix: Ensures spec-compliant read/subscribe/write/invoke responses for a model-known but absent high-privilege attribute, event or command
  • Fix: Decodes VendorID/ProductID from the "fallback method" (Mvid:/Mpid: in the commonName) of attestation certificates

• @matter/types

  • Enhancement: Added isValidPasscode()/assertValidPasscode() for onboarding passcode validation
  • Fix: Ensure that passcodes are valid when encoding or decoding pairing codes
  • Fix: Ensures that the most-significant bit of a nullable bitmap is reserved for NULL as defined in the Matter specification

• @project-chip/matter.js

  • Fix: Ensure that PairedNode.connect() reconnects a node that was previously disconnected