Bug Fixes
- Fixed a crash that could occur when removing a partition with a very large number of log segments, e.g. during partition rebalancing. by @pgellert in #31505
- Fixed a crash where a snapshot write failing on a full disk (ENOSPC) aborted the node with a misleading "snapshot writer has to be closed" assertion instead of surfacing the I/O error. by @nvartolomei in #31186
- Fixed a double-free / use-after-free in c-ares query-completion handling (CVE-2026-33630). by @bartoszpiekny-redpanda in #31486
- Fixed a race in the internal Kafka client where a concurrent request on a freshly established SASL connection could be sent before authentication finished, causing the broker to drop the connection. by @nvartolomei in #31192
- #31550
rpk connect upgradeno longer fails to determine the currently-installed Redpanda Connect version when that version has a segment of three or more digits, which had blocked upgrading any Connect install since 4.100.0. by @JakeSCahill in #31551
Full Changelog: v26.1.15...v26.1.16