The rencode package through 1.0.6 for Python allows an infinite loop in typecode decoding (such as via ;\x2f\x7f), enabling a remote attack that consumes CPU and memory.
github.com/aresch/rencode/commit/572ff74586d9b1daab904c6f7f7009ce0143bb75
github.com/aresch/rencode/pull/29
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMVQRPDVSVZNGGX57CFKCYT3DEYO4QB6/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MCLETLGVM5DBX6QNHQFW6TWGO5T3DENY/
pypi.org/project/rencode/#history
seclists.org/fulldisclosure/2021/Sep/16
security.netapp.com/advisory/ntap-20211008-0001/