# ClickHouse v26.6.3.62-stable — Release v26.6.3.62-stable

- Product: ClickHouse (https://whatsnew.fyi/product/clickhouse)
- Vendor: ClickHouse
- Date: 2026-08-19
- Version: v26.6.3.62-stable
- Original notes: https://github.com/ClickHouse/ClickHouse/releases/tag/v26.6.3.62-stable
- Permalink: https://whatsnew.fyi/product/clickhouse/releases/v26.6.3.62-stable
- Labels: Machine-generated from commit messages — the vendor published no release notes

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — Fixed `type_json_allow_duplicated_key_with_literal_and_nested_object` not working with typed paths in JSON.
- **fixed** — Fixed data race on `MemoryReservation` release at query finish.
- **fixed** — Fixed JOIN USING identifier resolution from aliases nested in the SELECT list.
- **fixed** — Fixed data race on FileCacheQueryLimit::query_map causing LOGICAL_ERROR.
- **fixed** — Fixed use-after-free in async insert queue due to deadline collision.
- **fixed** — Fixed `Field::operator<=` comparing a `Float64` with itself.
- **fixed** — Fixed block structure check for aggregate-state columns nested in containers and out-of-bounds read in SerializationReplicated on the native protocol.
- **fixed** — Fixed bad cast in KeyCondition for nested CAST that re-introduces LowCardinality.
- **fixed** — Fixed wrong value for a virtual column on the right side of direct JOIN and virtual row not being applied in some cases.
- **fixed** — Fixed multiple issues including out-of-bounds read in Parquet reader, Kafka table attachment, JSON subcolumn skip-index matching, Paimon table reading with nullable ARRAY or MAP columns, and `ORDER BY ... LIMIT` returning too few rows under a row policy.