All versions of package reportlab at time of writing are vulnerable to Server-side Request Forgery (SSRF) via img tags. In order to reduce risk, use trustedSchemes & trustedHosts (see in Reportlab’s documentation)
Steps to reproduce by Karan Bamal:
<img src="http://127.0.0.1:5000" />
nc -lp 5000
bugzilla.redhat.com/show_bug.cgi?id=1930417
hg.reportlab.com/hg-public/reportlab
hg.reportlab.com/hg-public/reportlab/file/f094d273903a/CHANGES.md#l71
hg.reportlab.com/hg-public/reportlab/rev/7f2231703dc7
lists.debian.org/debian-lts-announce/2023/09/msg00037.html
lists.fedoraproject.org/archives/list/[email protected]/message/HMUJA5GZTPQ5WRYUCCK2GEZM4W43N7HH
lists.fedoraproject.org/archives/list/[email protected]/message/YZQSFCID67K6BTC655EQY6MNOF35QI44
nvd.nist.gov/vuln/detail/CVE-2020-28463
snyk.io/vuln/SNYK-PYTHON-REPORTLAB-1022145
www.reportlab.com/docs/reportlab-userguide.pdf