Elasticsearch reported this major-impact incident on its official status page on Aug 14, 2026, 09:22 UTC. It was resolved after 6d 7h.
Right now Elasticsearch is operational. Live Elasticsearch status →
Elasticsearch 9.5.2 has been released and contains the fix for this issue. Customers running 9.5.0 or 9.5.1 should upgrade to 9.5.2. At this time we are considering this issue resolved and will be providing no further updates.
Elasticsearch 9.5.1 contains a known issue where boolean queries containing a must, filter, or should clause using a multi-value terms query, alongside a must_not clause on fields with disabled indexing, can still return false-positive matches. While the patch in 9.5.1 (https://github.com/elastic/elasticsearch/pull/155936) resolved the bulk-scorer defect for term and range query paths; multi-value terms queries utilize a different Lucene query type that was not covered by that fix. Time Series Data Streams (TSDB) and columnar indices/data streams remain affected for this query pattern, as indexing is disabled by default on those fields. Affected terms queries may return false-positive matches (including documents that should have been excluded) and report higher document counts than expected. No error is raised, so queries will appear to complete successfully. What you can do: - If you have not yet upgraded to 9.5.*, we recommend deferring the upgrade until version 9.5.2 is availab
Our 5-minute checks didn't record a change in Elasticsearch's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.
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Elasticsearch reported 23 incidents in the last 90 days, 20 of them major or critical. A typical incident lasted 3h 35m. See Elasticsearch's uptime and incident history