FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

py-rencode -- infinite loop that could lead to Denial of Service

Affected packages
	py310-rencode	<=	1.0.6_1
	py311-rencode	<=	1.0.6_1
	py37-rencode	<=	1.0.6_1
	py38-rencode	<=	1.0.6_1
	py39-rencode	<=	1.0.6_1

Details

VuXML ID	70d0d2ec-cb62-11ed-956f-7054d21a9e2a
Discovery	2021-09-09
Entry	2023-03-25
Modified	2026-10-31

NIST reports:

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.

[source]

References

CVE Name	CVE-2021-40839
URL	https://osv.dev/vulnerability/GHSA-gh8j-2pgf-x458
URL	https://osv.dev/vulnerability/PYSEC-2021-345