CVE-2026-11972

Public on 2026-06-23

Modified on 2026-07-01

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.

Severity

Important

See what this means

CVSS v3 Base Score

7.5

See breakdown

Affected Packages

Platform	Package	Status
Amazon Linux 2 - Core	python	Pending Fix
Amazon Linux 2 - Core	python3	Pending Fix
Amazon Linux 2023	python3.11	Pending Fix
Amazon Linux 2023	python3.12	Pending Fix
Amazon Linux 2023	python3.13	Pending Fix
Amazon Linux 2023	python3.14	Pending Fix
Amazon Linux 2023	python3.9	Pending Fix

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-11972 Mitre: CVE-2026-11972