On September 16, 2026, CISA added a local privilege escalation (CVE-2026-87886) caused by overly permissive default permissions in the Acronis Backup plugins for cPanel & WHM, Plesk and DirectAdmin to its KEV catalog. Update to the fixed builds — the September 19 federal deadline has already passed.
Changed Block Tracking for Kubernetes CSI drivers, in alpha since September 2025, moved to beta with the external-snapshot-metadata v1.0.0 release and removed the v1alpha1 API with no automatic conversion. Backup vendors and CSI driver maintainers must re-apply the CRD and migrate their manifests to v1beta1.
On September 10, 2026 two CNCF ambassadors published three reproducible failure scenarios that separate having backups from being able to actually recover. Test full restore into a cluster that has never run the workload, validate data against an expected result, and time the whole thing.
On August 27, 2026, Backblaze announced that SSE-B2 will automatically encrypt every new object with AES-256 starting September 14, at no extra cost and with no API changes. For self-hosters who back up to B2, encryption at rest stops being a checkbox you have to remember.
On August 13, 2026 the rsync team released version 3.5, closing 33 CVEs including a critical flaw (CVE-2026-53791) that let a client spoof its source address through the proxy protocol. If your backups run as root over SSH, this is the update to apply first.
Immich shipped version 3.0 on 2 July 2026, nine months after its first stable release and weeks after a two-year retrospective on its backing by nonprofit FUTO. It replaces Google Photos once you can afford roughly $300 of hardware and a disciplined off-site backup — skip either, and the migration trades Google’s reliability for a real chance of losing everything.
BorgBackup 1.4.4 and Restic 0.18.1 are the two best open-source backup tools for Linux in 2026 — deduplication, AES-256 encryption, and cron automation. Here’s how to configure them so an accidental rm -rf never costs you more than the last hour of work.
