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nastasha-solomon merged 2 commits into from
Mar 18, 2026
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Security 8.19.13 release notes #7154

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Security 8.19.13 release notes
natasha-moore-elastic Mar 13, 2026
26adf32
reformat breaking change
natasha-moore-elastic Mar 17, 2026
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1 change: 1 addition & 0 deletions docs/release-notes.asciidoc
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This section summarizes the changes in each release.

* <<release-notes-8.19.13, {elastic-sec} version 8.19.13>>
* <<release-notes-8.19.12, {elastic-sec} version 8.19.12>>
* <<release-notes-8.19.11, {elastic-sec} version 8.19.11>>
* <<release-notes-8.19.10, {elastic-sec} version 8.19.10>>
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37 changes: 37 additions & 0 deletions docs/release-notes/8.19.asciidoc
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[[release-notes-header-8.19.0]]
== 8.19

[discrete]
[[release-notes-8.19.13]]
=== 8.19.13

[discrete]
[[breaking-changes-8.19.13]]
==== Breaking changes

[discrete]
.Removes `serializer` and `deserializer` parameters from the Lists API
[%collapsible]
====

Removes the unused `serializer` and `deserializer` parameters from the Lists API endpoints ({kibana-pull}250111[#250111]).

*Impact* +
API requests that include `serializer` or `deserializer` parameters will return a deprecation warning header. The parameters are ignored.

*Action* +
Remove any `serializer` or `deserializer` parameters from your Lists API requests.
====

[discrete]
[[enhancements-8.19.13]]
==== Enhancements
* Improves the reliability of {elastic-defend}'s malware-on-write detection.

[discrete]
[[bug-fixes-8.19.13]]
==== Fixes
* Fixes an issue where the alert details flyout persisted after navigating away from {elastic-sec} ({kibana-pull}256001[#256001]).
* Enables `defaultModel` for Azure OpenAI connector to support APIM endpoints ({kibana-pull}253577[#253577]).
* Fixes an issue where the legacy `rules/prepackaged` endpoints returned 500 errors on Basic licenses when processing prebuilt rule packages that include {ml} rules ({kibana-pull}253574[#253574]).
* Adds support for timestamp overrides to Timeline at the data view level, allowing Timeline to use the data view's configured timestamp field instead of `@timestamp` ({kibana-pull}251827[#251827]).
* Improves {elastic-defend} Linux trusted application handling by using Quark's trusted PID queue APIs for more consistent trusted PID synchronization.
* Fixes an issue that would cause hotfix builds of {elastic-defend} to incorrectly report their version in Windows Security Center.

[discrete]
[[release-notes-8.19.12]]
=== 8.19.12
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