DiskCache (python-diskcache) through 5.6.3 uses Python pickle for serialization by default. An attacker with write access to the cache directory can achieve arbitrary code execution when a victim application reads from the cache.
Exploitability
AV:NAC:LPR:LUI:RScope
S:UImpact
C:HI:HA:L7.6/CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L