elasticsearch/docs/reference/release-notes/8.17.5.asciidoc

[[release-notes-8.17.5]]
== {es} version 8.17.5

Also see <<breaking-changes-8.17,Breaking changes in 8.17>>.

[[bug-8.17.5]]
[float]
=== Bug fixes

Authentication::
* Fix NPE for missing Content Type header in OIDC Authenticator {es-pull}126191[#126191]

ES|QL::
* Fix `ReplaceMissingFieldsWithNull` {es-pull}125764[#125764] (issues: {es-issue}126036[#126036], {es-issue}121754[#121754], {es-issue}126030[#126030])
* Fix usage of already released null block in `ValueSourceReaderOperator` {es-pull}126411[#126411] (issue: {es-issue}125850[#125850])

Machine Learning::
* Fixing bedrock event executor terminated cache issue {es-pull}118177[#118177] (issue: {es-issue}117916[#117916])

Search::
* Re-enable parallel collection for field sorted top hits {es-pull}125916[#125916]
* Support indices created in ESv6 and updated in ESV7 using different LuceneCodecs as archive in current version. {es-pull}125389[#125389]

TLS::
* Set `keyUsage` for generated HTTP certificates and self-signed CA {es-pull}126376[#126376] (issue: {es-issue}117769[#117769])