Bottle before 0.12.20 mishandles errors during early request binding. Reference: https://github.com/bottlepy/bottle/compare/0.12.19...0.12.20 https://github.com/bottlepy/bottle/commit/e140e1b54da721a660f2eb9d58a106b7b3ff2f00 https://github.com/bottlepy/bottle/commit/a2b0ee6bb4ce88895429ec4aca856616244c4c4c
Created python-bottle tracking bugs for this issue: Affects: epel-7 [bug 2094656] Affects: fedora-all [bug 2094655]