CVE-2026-109380

HighCVSS 7.5/10Last modified Oct 16, 2026

Description

modern-tar 0.3.5 through 0.8.5 contains a memory exhaustion vulnerability that allows attackers to produce negative entry sizes via non-octal bytes parsed by readOctal(). Attackers can supply a crafted, optionally gzip-compressed, archive to unpackTar() that buffers chunks indefinitely, exhausting process memory and suppressing later entries.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-1284

Affected software

No affected versions have been published.

Timeline

Published: Oct 12, 2026
Last modified: Oct 16, 2026
NVD status: Deferred

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