The following information is what I was able to dig up concerning OCT2019CPU, published just a few days ago.
Here are the specific patch ID #s which apply to Hyperion.
Oracle WebLogic Server, versions 10.3.6.0.0
30109677: WLS
PATCH SET UPDATE 10.3.6.0.191015
(Available for 11.1.2.3 and 11.1.2.4 only)
November 11 update: Please consult WebLogic Breaks Jython? before promoting this patch to Production.
Oracle Java SE, version 7
30384776:
Oracle JDK 7 Update 241 b31
Requires our upgrade procedure from Java 6 & JRockit
6 to Java 7 is performed first:
(Available for 11.1.2.4 only)
Hyperion Data Relationship Management, version 11.1.2.4
28818149:
ORACLE DATA RELATIONSHIP MANAGEMENT - 11.1.2.4.347 PSU
(This is a stale patch – the last DRM patch is from Feb
2019)
Hyperion Enterprise Performance Management Architect,
version 11.1.2.4
22078964: PSE
REQUEST FOR 22074034-DRM INTEG: REBUILD OF WS CLIENT PROXY FOR DRM API WS
(Extremely stale patch from 2015 - only applies to
customers who integrate EPMA with DRM)
Hyperion Financial Reporting, version 11.1.2.4.7xx
29712951: RA
11.1.2.4.711 PATCH SET UPDATE FOR FINANCIAL REPORTING
(patch is 4 months old)
Hyperion Planning 11.1.2.4
29889455:
HYPERION PLANNING - PATCH SET UPDATE 11.1.2.4.009
(patch is 3 months old)
Check the patch readme and Oracle forum for Essbase
certification issues. Prior Essbase
patches were de-certified by Oracle for Planning 11.1.2.4.006. I don’t know if this has been fixed for .009.
Hyperion Shared Services 11.1.2.4
28314691:
Patch Set Update: HSS 11.1.2.4.008
(patch is 1 year old. Depends upon prior PSEs being
applied first and in a specific order.
Consult the readme)
EPM Workspace / RA Framework 11.1.2.4
29115044:
TRACKING BUG FOR R&A PSU 11.1.2.4.009
Extreme care must be taken when downloading
Workspace / RA Framework patches!
We must look for this text within the patch readme:

Unless things have changed, co-mingling RA Framework / Workspace 11.1.2.4.9xx with an
11.1.2.4.000/700 system could corrupt Workspace and make it non-functional.
Source of the above patch info from support.oracle.com:
“Critical Patch Update (CPU) Program Oct 2019 Patch Availability Document (PAD) (Doc ID 2568292.1)”
“Critical Patch Update (CPU) Program Oct 2019 Patch Availability Document (PAD) (Doc ID 2568292.1)”