In Pallets Jinja before 2.10.1, str.format_map allows a sandbox escape.
lists.opensuse.org/opensuse-security-announce/2019-05/msg00030.html
lists.opensuse.org/opensuse-security-announce/2019-06/msg00064.html
access.redhat.com/errata/RHSA-2019:1152
access.redhat.com/errata/RHSA-2019:1237
access.redhat.com/errata/RHSA-2019:1329
github.com/advisories/GHSA-462w-v97r-4m45
lists.apache.org/thread.html/09fc842ff444cd43d9d4c510756fec625ef8eb1175f14fd21de2605f@%3Cdevnull.infra.apache.org%3E
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lists.fedoraproject.org/archives/list/[email protected]/message/TS7IVZAJBWOHNRDMFJDIZVFCMRP6YIUQ/
palletsprojects.com/blog/jinja-2-10-1-released
usn.ubuntu.com/4011-1/
usn.ubuntu.com/4011-2/