CVE-2026-5704
MEDIUM severity · CVSS 5 · Unrestricted file upload
5CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionRequired
Confidentiality impactNone
Integrity impactHigh
Availability impactNone
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://access.redhat.com/errata/RHSA-2026:61581
- https://access.redhat.com/errata/RHSA-2026:61783
- https://access.redhat.com/security/cve/CVE-2026-5704Advisory
- http://www.openwall.com/lists/oss-security/2026/04/11/11Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2455360Advisory
- http://www.openwall.com/lists/oss-security/2026/04/11/10Advisory
- http://www.openwall.com/lists/oss-security/2026/04/12/2Advisory