CVE-2021-40839

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CVSS 3.1

7.5 high

EPSS

6%p92

Published

Sep 10, 2021 (Sep 10, 2021)

Modified

Jun 17, 2026

Description

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.

Vendors: rencode project fedoraproject
Products: rencode, fedora
Weakness: CWE-835
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (5.6%)

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