{"id":"CVE-2026-5704","title":"A flaw was found in tar","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, pot…","severity":"medium","cvss":5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N","cwe":["CWE-434"],"vendor":"gnu","product":"tar","affected":["tar","hardened_images","enterprise_linux = 6.0","enterprise_linux = 7.0","enterprise_linux = 8.0","enterprise_linux = 9.0","enterprise_linux = 10.0"],"patched":["enterprise_linux_baseos_v_10","enterprise_linux_baseos_v_9","discovery 2","hardened_images","update_infrastructure 5"],"published":"2026-04-06","updated":"2026-09-22","sourceUpdated":"2026-09-22T22:17:11.880","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-5704","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:61581","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:61586","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:61783","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:66018","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:66514","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:70390","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-5704","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2455360","label":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2026/04/11/10","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2026/04/11/11","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2026/04/12/2","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5704.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-5704"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5704"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00401,"epssPercentile":0.34166,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-04-07T15:48:15.196926Z"},"ingestedAt":"2026-09-01T14:27:54.531Z","slug":"CVE-2026-5704","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `tar`\n- `hardened_images`\n- `enterprise_linux = 6.0`\n- `enterprise_linux = 7.0`\n- `enterprise_linux = 8.0`\n- `enterprise_linux = 9.0`\n- `enterprise_linux = 10.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:61586** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 10) · released 2026-09-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:61586)\n- **RHSA-2026:61581** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 9) · released 2026-08-31 · [advisory](https://access.redhat.com/errata/RHSA-2026:61581)\n- **RHSA-2026:61783** · Red Hat · fixed in: Red Hat Discovery 2 · released 2026-08-31 · [advisory](https://access.redhat.com/errata/RHSA-2026:61783)\n- **RHSA-2026:66514** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-10 · [advisory](https://access.redhat.com/errata/RHSA-2026:66514)\n- **RHSA-2026:66018** · Red Hat · fixed in: Red Hat Update Infrastructure 5 · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:66018)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8 · updated 2026-09-10 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5704.json)","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":27.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}