[DOCS] 7.6.1 Release Notes (#58492)

* [DOCS] 7.6.1 Release nNotes

* Security issues

* Combines Lens and visualizations
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This section summarizes the changes in each release.
* <<release-notes-7.6.1>>
* <<release-notes-7.6.0>>
* <<release-notes-7.5.2>>
* <<release-notes-7.5.1>>
@ -33,6 +34,82 @@ This section summarizes the changes in each release.
* <<release-notes-7.0.0-alpha1>>
--
[[release-notes-7.6.1]]
== {kib} 7.6.1
See <<breaking-changes-7.6,breaking changes in 7.6>>.
[float]
[[security-fix-7.6.1]]
=== Security issues
In {kib} 7.6.0 and earlier, Node.js contains the following security issues:
* The TLS handling code for Node.js includes a Denial of Service (DoS) issue. Successful exploitation of the flaw could result in {kib} crashing. Refer to https://www.elastic.co/community/security/, CVE-2019-15604.
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There are no known workarounds for this issue.
* There are issues with how Node.js handles malformed HTTP headers. The malformed headers could result in an HTTP request smuggling attack when {kib} is running behind a proxy that is vulnerable to HTTP request smuggling attacks. Refer to https://www.elastic.co/community/security/, CVE-2019-15605 and CVE-2019-15606.
+
For instructions on how to mitigate HTTP request smuggling attacks, contact your proxy vendor.
Administrators running {kib} in an environment with untrusted users should upgrade to {kib} 7.6.1, which updates Node.js to 10.19.0.
[float]
[[enhancement-7.6.1]]
=== Enhancements
SIEM::
* Imports rules unit tests {pull}57466[#57466]
[float]
[[bug-7.6.1]]
=== Bug fixes
APM::
* Fixes cloud env in APM tutorial {pull}57817[#57817]
* Adds `xpack.apm.enabled` key to config schema {pull}57539[#57539]
* X-axis labels on Error occurrences chart are incorrect based on {kib} timezone {pull}55686[#55686]
Canvas::
* Sanitizes workpad before sending to API {pull}57704[#57704]
Lens and visualizations::
* Fixes bugs in Lens filters (#56441) {pull}56648[#56648]
* Makes field stats work for index patterns without time fields {pull}56759[#56759]
* Fixes auto refresh in visualizations and Lens {pull}57667[#57667]
Machine Learning::
* Fixes Data Visualizer responsive layout {pull}56372[#56372]
* Fixes overall stats for saved search on the Data Visualizer page {pull}57312[#57312]
* Fixes jobs list default refresh {pull}57086[#57086]
* Updates schema definition for create route {pull}56979[#56979]
* Fixes brush visibility. {pull}57564[#57564]
* Fixes chart resize after browser refresh {pull}57578[#57578]
* Fixes hiding date picker for settings pages {pull}57544[#57544]
Management::
* Allows support for nested multi-fields {pull}58203[#58203]
* Fixes performance bottleneck for large JSON payloads {pull}57668[#57668]
* Fixes filter deprecations search filter {pull}57541[#57541]
Maps::
* Sets filter.meta.key to geoFieldName so query passes filterMatchesIndex when ignoreFilterIfFieldNotInIndex is true {pull}56692[#56692]
* Fixes document source top hits split by scripted field {pull}57481[#57481]
* Only request field in docvalue_fields when the field supports doc values {pull}57372[#57372]
Monitoring::
* Fixes issue when index pattern has no fields {pull}58242[#58242]
* Fixes inaccuracies in Logstash pipeline listing metrics {pull}55868[#55868]
Platform::
* Limits fetching index patterns {pull}56603[#56603]
* Fixes browser date format {pull}57714[#57714]
* Prepends basePath in getUrlForApp {pull}57316[#57316]
* Uses app id instead of pluginId to generate navlink from legacy apps {pull}57542[#57542]
* Retries ES API calls that fail with 410/Gone to prevent {kib} from crashing at startup {pull}56950[#56950]
* Removes injected reference from home app {pull}57836[#57836]
Security::
* Logout should redirect to the login screen at the server base path {pull}56786[#56786]
* Adds xpack.encryptedSavedObjects.encryptionKey to docker allow-list {pull}58291[#58291]
* Fixes short url in spaces {pull}58313[#58313]
SIEM::
* Backend end-to-end tests {pull}57166[#57166]
* Removes internal tags when copying signals from rules {pull}57744[#57744]
* Fixes return codes where some were rule_id instead of id {pull}57939[#57939]
* Fixes Host Details Events Table to only show events for specified Host {pull}57388[#57388]
Uptime::
* Uses scripted metric for snapshot calculation {pull}58247[#58247]
[[release-notes-7.6.0]]
== {kib} 7.6.0