In Spark before 2.7.2, a remote attacker can read unintended static files via various representations of absolute or relative pathnames, as demonstrated by file: URLs and directory traversal sequences. NOTE: this product is unrelated to Ignite Realtime Spark.
sparkjava.com/news
access.redhat.com/errata/RHSA-2018:2020
access.redhat.com/errata/RHSA-2018:2405
github.com/perwendel/spark/commit/030e9d00125cbd1ad759668f85488aba1019c668
github.com/perwendel/spark/commit/a221a864db28eb736d36041df2fa6eb8839fc5cd
github.com/perwendel/spark/commit/ce9e11517eca69e58ed4378d1e47a02bd06863cc
github.com/perwendel/spark/issues/981