paraparser in ReportLab before 3.5.31 allows remote code execution because start_unichar in paraparser.py evaluates untrusted user input in a unichar element in a crafted XML document with '<unichar code="' followed by arbitrary Python code, a similar issue to CVE-2019-17626.
https://lists.debian.org/debian-lts-announce/2023/09/msg00037.html
https://github.com/MrBitBucket/reportlab-mirror/blob/master/CHANGES.md