26.9.1

ESS Community Helm Chart 26.9.1 (2026-09-04)

Deprecated

• Synapse: Drop synapse.ephemeralStorages.media as non-media processes now mount the media store in /tmp. (#1566)

Changed

• Change the Redis Deployment to be a StatefulSet after the Valkey migration. (#1368)

• Replace Redis with Valkey.

  The redis key at the top-level in the values file is deprecated.
  It is replaced by the top-level valkey key.
  The schema is identical apart from redis.redisExporter which is replaced by valkey.valkeyExporter.

  Values from redis are merged into valkey to control deployment of Valkey

  The top-level redis key will be removed in a later release and any user set values under redis should be moved to valkey.

  The external Redis keys in hookshot, synapse and matrixRTC.sfu have replacements for redis in the form of redisOrValkey.
  Values from {hookshot,synapse,matrixRTC.sfu}.redis should be move to {hookshot,synapse,matrixRTC.sfu}.redisOrValkey.
  {hookshot,synapse,matrixRTC.sfu}.redis will be removed in a later release. (#1368, #1558, #1559, #1561, #1562, #1563)

• Upgrade Synapse to v1.160.0.

  Highlights:

  • Add optional support for MSC4262: Profile Updates for Sliding Sync
  • Fix a bug where stream positions (presence, to-device message, etc.) could stop being sent to clients
  • Speed up the conversion of device list changes into outbound federation pokes

  Full Changelogs:

  • v1.160.0

  (#1532)

• Switch Matrix Authentication Service to pull from oci.element.io. (#1535)

• Upgrade Matrix Authentication Service to v1.24.0.

  Highlights:

  • Update h2 to address security vulnerability (RUSTSEC-2026-0258)
  • Translation updates

  Full Changelogs:

  • v1.24.0

  (#1535)

• Upgrade Element Admin to v0.1.13.

  Highlights:

  • Add a dedicated page to manage user devices and applications being used
  • Fix the accessibility issues the new test suite found

  Full Changelogs:

  • v0.1.13

  (#1564)

Fixed

• Fix there being multiple independent Redis Pods running during upgrades. (#1557)

• Synapse: Restore the /tmp directory.

  Fix an issue where media uploads larger than 100KB would failed due to missing a tmp directory available for writing buffered files.

  • synapse.ephemeralStorages.nonMediaTmp handles the /tmp directory properties of non-media workers.
  • synapse.media.ephemeralStorages.media.tmp handles the /tmp directory properties of media workers. (#1566)

Internal

• Fix configuration consistency tests when ConfigMaps were mounted with a subPath. (#1566)
• CI: Cleanup old tests skips. (#1567)
• CI: unpin Helm in the tests from v4.2.0. (#1568)