An issue was discovered in Matrix libolm through 3.2.16. Cache-timing attacks can occur due to use of base64 when decoding group session keys. This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Exploitability
AV:NAC:HPR:LUI:NScope
S:UImpact
C:HI:NA:N5.3/CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N