CVE-2026-11972

Name: CVE-2026-11972
Creator: NVD / NIST
Published: 2026-06-23T23:16:49.033+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.2/10EPSS 0.32%

Last modified Jun 25, 2026

This CVE is reserved or awaiting analysis. Details will appear once published by NVD.

Description

When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.

Metrics

CVSS 4.0

8.2/10

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.32%

23.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-252
CWE-606
CWE-770

References

https://github.com/python/cpython/issues/151981
https://github.com/python/cpython/pull/151982
https://mail.python.org/archives/list/security-announce@python.org/thread/AXPSKKTSRKXTTJULW3XSIC74WZNAAPPB/

Timeline

Published: Jun 23, 2026
Last Modified: Jun 25, 2026
Status: Awaiting Analysis

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Source: NVD / NIST