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Vulnerabilities CVE-2026-7774

CVE-2026-7774

Medium
Open
TLP:CLEAR

tarfile.data_filter path traversal bypass allows writing outside the extraction directory

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Description

tarfile.data_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() to write files outside the destination directory, subject to the permissions of the extracting process.

Details

CVSS Score
6.9
EPSS Score
0.60%

45.6th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Jun 4, 2026
Last Modified
Aug 13, 2026
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