Tails 4.9 fixes many security issues that affect Tails 4.8. You should upgrade to Tails 4.9 as soon as possible.

• Tor Browser: Mozilla Foundation Security Advisory 2020-31
• Thunderbird: Mozilla Foundation Security Advisory 2020-29
• Linux: CVE-2020-10768, CVE-2020-10767, CVE-2020-10766, CVE-2020-13974, CVE-2020-15852, CVE-2020-10781, CVE-2020-10781, CVE-2020-15780
• Evolution Data Server: Debian Security Advisory 4725
• FFmpeg: Debian Security Advisory 4722
• ImageMagick: Debian Security Advisory 4712
• NSS: Debian Security Advisory 4726
• OpenMPT: Debian Security Advisory 4729
• WebKitGTK: Debian Security Advisory 4724