Major Description
There are some CVE reports related to 2.9.8 and 2.9.9 versions, for example:
- CVE-2019-14379
- CVE-2019-17267
- CVE-2019-16335
- CVE-2019-14540
- CVE-2019-16943
- CVE-2019-16942
- CVE-2019-17531
- CVE-2019-14439
- CVE-2019-12086
- CVE-2019-12814
- CVE-2019-12384
Most of them suggest to update to the 2.9.10 version.