Medium severity · published Apr 6, 2026
CVE-2026-5704
Tar: tar: hidden file injection via crafted archives
5.5
CVSS
0.4%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Discovery 2 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 6 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 7 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Hardened Images · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Update Infrastructure 5 · Red Hat
All versions, or not specified · source: vendor
EL
Enterprise Linux · Redhat
6.0; 7.0; 8.0; 9.0; 10.0 · source: NVD
HI
Hardened Images · Redhat
All versions, or not specified · source: NVD
TA
Tar · Gnu
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5704
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5704
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:61581
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:61586
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:61783
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:66018
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:66514
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:70390
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