Unrestricted Upload of File with Dangerous Type Affecting tar package, versions <2:1.30-13.el8_10


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.43% (37th percentile)

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  • Snyk IDSNYK-ALMALINUX8-TAR-20075436
  • published24 Sept 2026
  • disclosed31 Aug 2026

Introduced: 31 Aug 2026

CVE-2026-5704  (opens in a new tab)
CWE-434  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 tar to version 2:1.30-13.el8_10 or higher.
This issue was patched in ALSA-2026:70390.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tar package and not the tar package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

A flaw was found in tar. A remote attacker could exploit this vulnerability by crafting a malicious archive, leading to hidden file injection with fully attacker-controlled content. This bypasses pre-extraction inspection mechanisms, potentially allowing an attacker to introduce malicious files onto a system without detection.

CVSS Base Scores

version 3.1