CVE-2026-5704
mediumA flaw was found in tar.
Vendor / product: Gnu — tar
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
5.5
5.5 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-04-06 16:16
Modified: 2026-11-05 23:16
NVD status: Modified
Last synced 6 hours ago
Verified against the source API 2026-11-05 23:24 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
gnu / tar all versions
redhat / hardened_images all versions
redhat / enterprise_linux 6.0, 7.0, 8.0, 9.0, 10.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/errata/RHSA-2026:61581 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:61586 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:61783 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:66018 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:66514 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:70390 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-5704 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2455360 secalert@redhat.com
- http://www.openwall.com/lists/oss-security/2026/04/11/10 af854a3a-2127-422b-91ae-364da2661108
- http://www.openwall.com/lists/oss-security/2026/04/11/11 af854a3a-2127-422b-91ae-364da2661108
- http://www.openwall.com/lists/oss-security/2026/04/12/2 af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-11-05 23:24 UTC · record ↗