Impact Due to a sudden upstream breaking change by Bitly, versions of "bitlyshortener" <0.6.0 generate invalid short URLs. All users are affected and must update immediately. Patches Upgrading "bitlyshortener" to 0.6.0 or newer will prevent the generation such invalid short URLs. Workarounds A workaround is to replace "https://j.mp/" in each generated short URL with "https://bit.ly/". References * "Release notes" (https://github.com/impredicative/bitlyshortener/releases)