Vulnerability-Lookup

CVE-2026-5704 (GCVE-0-2026-5704)

Vulnerability from cvelistv5 – Published: 2026-04-06 15:17 – Updated: 2026-09-10 22:01

Title

Tar: tar: hidden file injection via crafted archives

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.

Severity

5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-07 15:48 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

redhat redhat root

References

10 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:61581	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:61586	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:61783	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:66018	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:66514	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-5704	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2455360	issue-trackingx_refsource_REDHAT
http://www.openwall.com/lists/oss-security/2026/0…
http://www.openwall.com/lists/oss-security/2026/0…
http://www.openwall.com/lists/oss-security/2026/04/12/2

Impacted products

12 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 2:1.35-13.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 2:1.34-13.el9_8 , < * (rpm) cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Discovery 2	Unaffected: 1788205779 , < * (rpm) cpe:/a:redhat:discovery:2::el9
Red Hat	Red Hat Hardened Images	Unaffected: 1.35-10.hum1 , < * (rpm) cpe:/a:redhat:hummingbird:1
Red Hat	Red Hat Update Infrastructure 5	Unaffected: 1788880445 , < * (rpm) cpe:/a:redhat:rhui:5::el9
Red Hat	Red Hat Update Infrastructure 5	Unaffected: 1788880464 , < * (rpm) cpe:/a:redhat:rhui:5::el9
Red Hat	Red Hat Update Infrastructure 5	Unaffected: 1788880456 , < * (rpm) cpe:/a:redhat:rhui:5::el9
Red Hat	Red Hat Update Infrastructure 5	Unaffected: 1788765051 , < * (rpm) cpe:/a:redhat:rhui:5::el9
Red Hat	Red Hat Update Infrastructure 5	Unaffected: 1788880581 , < * (rpm) cpe:/a:redhat:rhui:5::el9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8

Date Public

2026-04-06 13:36

Credits

Red Hat would like to thank Guillermo de Angel Garcia for reporting this issue.

Show details on NVD website

JSON

To clipboard

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}

RHSA-2026:61783

Vulnerability from csaf_redhat - Published: 2026-08-31 21:39 - Updated: 2026-09-18 22:06

Summary

Red Hat Security Advisory: A Subscription Management tool for finding and reporting Red Hat product usage

Severity

Important

Scope

42 vulnerabilities in this advisory, including CVE-2026-5704.

CVE-2026-5704

5.0 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

Fixed: 2 products Known not affected: 2 products

https://access.redhat.com/errata/RHSA-2026:61783

Open the full advisory

RHSA-2026:66018

Vulnerability from csaf_redhat - Published: 2026-09-09 14:32 - Updated: 2026-09-18 20:58

Summary

Red Hat Security Advisory: Red Hat Update Infrastructure 5.3 security update

Severity

Important

Scope

30 vulnerabilities in this advisory, including CVE-2026-5704.

CVE-2026-5704

5.0 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

Fixed: 5 products

https://access.redhat.com/errata/RHSA-2026:66018

Open the full advisory

RHSA-2026:66514

Vulnerability from csaf_redhat - Published: 2026-09-10 16:03 - Updated: 2026-09-10 22:01

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-5704.

CVE-2026-5704

5.0 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

Fixed: 3 products

https://access.redhat.com/errata/RHSA-2026:66514

Open the full advisory

RLSA-2026:61581 (CVE-2026-18477)

Vulnerability from osv_rocky – Published: 2026-09-01 06:05 – Updated: 2026-09-15 06:13 – Source website

Summary

Moderate: tar security, bug fix, and enhancement update

Details

The GNU tar program can save multiple files in an archive and restore files from an archive.

Security Fix(es):

tar: tar: Hidden file injection via crafted archives (CVE-2026-5704)
tar: tar: TOCTOU in incremental dumpdir 'X' rename handling allows restore path escape (CVE-2026-18477)
tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite (CVE-2026-18508)

Bug Fix(es) and Enhancement(s):

tar: --one-top-level with absolute path fails [rhel-9] (JIRA:Rocky Linux-144021)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity

5.0 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2026:61581	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2455360	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2509735	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2509843	REPORT
	https://access.redhat.com/errata/RHSA-2026:61581	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:9",
        "name": "tar",
        "purl": "pkg:rpm/rocky-linux/tar?distro=rocky-linux-9\u0026epoch=2"
      },
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            "yum_repository": "BaseOS"
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              "introduced": "0"
            },
            {
              "fixed": "2:1.34-13.el9_8"
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      "name": "Rocky Enterprise Software Foundation"
    },
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      "name": "Red Hat"
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  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:61581"
  },
  "details": "The GNU tar program can save multiple files in an archive and restore files from an archive.\n\nSecurity Fix(es):\n\n* tar: tar: Hidden file injection via crafted archives (CVE-2026-5704)\n\n* tar: tar: TOCTOU in incremental dumpdir \u0027X\u0027 rename handling allows restore path escape (CVE-2026-18477)\n\n* tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite (CVE-2026-18508)\n\nBug Fix(es) and Enhancement(s):\n\n* tar: --one-top-level with absolute path fails [rhel-9] (JIRA:Rocky Linux-144021)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:61581",
  "modified": "2026-09-15T06:13:17.560141Z",
  "published": "2026-09-01T06:05:33.619213Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:61581"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455360"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509735"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509843"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:61581"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Moderate: tar security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-18477",
    "CVE-2026-18508",
    "CVE-2026-5704"
  ]
}

RLSA-2026:61586 (CVE-2026-18477)

Vulnerability from osv_rocky – Published: 2026-09-11 00:11 – Updated: 2026-09-19 18:13 – Source website

Summary

Moderate: tar security, bug fix, and enhancement update

Details

The GNU tar program can save multiple files in an archive and restore files from an archive.

Security Fix(es):

tar: tar: Hidden file injection via crafted archives (CVE-2026-5704)
tar: tar: TOCTOU in incremental dumpdir 'X' rename handling allows restore path escape (CVE-2026-18477)
tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite (CVE-2026-18508)

Bug Fix(es) and Enhancement(s):

tar: --one-top-level with absolute path fails (JIRA:Rocky Linux-143906)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity

5.0 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2026:61586	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2455360	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2509735	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2509843	REPORT
	https://access.redhat.com/errata/RHSA-2026:61586	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:10",
        "name": "tar",
        "purl": "pkg:rpm/rocky-linux/tar?distro=rocky-linux-10\u0026epoch=2"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "BaseOS"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.35-13.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:61586"
  },
  "details": "The GNU tar program can save multiple files in an archive and restore files from an archive.\n\nSecurity Fix(es):\n\n* tar: tar: Hidden file injection via crafted archives (CVE-2026-5704)\n\n* tar: tar: TOCTOU in incremental dumpdir \u0027X\u0027 rename handling allows restore path escape (CVE-2026-18477)\n\n* tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite (CVE-2026-18508)\n\nBug Fix(es) and Enhancement(s):\n\n* tar: --one-top-level with absolute path fails (JIRA:Rocky Linux-143906)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:61586",
  "modified": "2026-09-19T18:13:24.723557Z",
  "published": "2026-09-11T00:11:04.412973Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:61586"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455360"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509735"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509843"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:61586"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Moderate: tar security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-18477",
    "CVE-2026-18508",
    "CVE-2026-5704"
  ]
}

SUSE-SU-2026:22289-1

Vulnerability from csaf_suse - Published: 2026-06-26 08:50 - Updated: 2026-09-16 19:59

Summary

Security update for tar

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2026-5704.

CVE-2026-5704

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Recommended: 4 products

Open the full advisory

SUSE-SU-2026:22377-1

Vulnerability from csaf_suse - Published: 2026-06-26 08:50 - Updated: 2026-09-16 20:00

Summary

Security update for tar

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2026-5704.

CVE-2026-5704

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Recommended: 22 products

Open the full advisory

UBUNTU-CVE-2026-5704 (CVE-2026-5704)

Vulnerability from osv_ubuntu – Published: 2026-04-06 16:16 – Updated: 2026-07-22 18:35 – Source website

Details

Severity

5.0 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

5.5 (Medium)


                    
                      CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-5704	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-5704	REPORT
	https://access.redhat.com/security/cve/CVE-2026-5704	REPORT
	https://ubuntu.com/security/notices/USN-8477-1	ADVISORY
	https://ubuntu.com/security/notices/USN-8477-2	ADVISORY
	https://ubuntu.com/security/notices/USN-8477-3	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "tar",
            "binary_version": "1.27.1-1ubuntu0.1+esm7"
          },
          {
            "binary_name": "tar-scripts",
            "binary_version": "1.27.1-1ubuntu0.1+esm7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "tar",
        "purl": "pkg:deb/ubuntu/tar@1.27.1-1ubuntu0.1+esm7?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.27.1-1ubuntu0.1+esm7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.26+dfsg-8",
        "1.27-3",
        "1.27-4",
        "1.27.1-1",
        "1.27.1-1ubuntu0.1",
        "1.27.1-1ubuntu0.1+esm1",
        "1.27.1-1ubuntu0.1+esm2",
        "1.27.1-1ubuntu0.1+esm3",
        "1.27.1-1ubuntu0.1+esm4",
        "1.27.1-1ubuntu0.1+esm5",
        "1.27.1-1ubuntu0.1+esm6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "tar",
            "binary_version": "1.28-2.1ubuntu0.2+esm6"
          },
          {
            "binary_name": "tar-scripts",
            "binary_version": "1.28-2.1ubuntu0.2+esm6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "tar",
        "purl": "pkg:deb/ubuntu/tar@1.28-2.1ubuntu0.2+esm6?arch=source\u0026distro=esm-infra-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.28-2.1ubuntu0.2+esm6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.27.1-2",
        "1.28-2ubuntu1",
        "1.28-2.1",
        "1.28-2.1ubuntu0.1",
        "1.28-2.1ubuntu0.2",
        "1.28-2.1ubuntu0.2+esm1",
        "1.28-2.1ubuntu0.2+esm2",
        "1.28-2.1ubuntu0.2+esm3",
        "1.28-2.1ubuntu0.2+esm4",
        "1.28-2.1ubuntu0.2+esm5"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "tar",
            "binary_version": "1.29b-2ubuntu0.4+esm4"
          },
          {
            "binary_name": "tar-scripts",
            "binary_version": "1.29b-2ubuntu0.4+esm4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "tar",
        "purl": "pkg:deb/ubuntu/tar@1.29b-2ubuntu0.4+esm4?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.29b-2ubuntu0.4+esm4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.29b-2",
        "1.29b-2ubuntu0.1",
        "1.29b-2ubuntu0.2",
        "1.29b-2ubuntu0.3",
        "1.29b-2ubuntu0.4",
        "1.29b-2ubuntu0.4+esm1",
        "1.29b-2ubuntu0.4+esm2",
        "1.29b-2ubuntu0.4+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "tar",
            "binary_version": "1.30+dfsg-7ubuntu0.20.04.4+esm3"
          },
          {
            "binary_name": "tar-scripts",
            "binary_version": "1.30+dfsg-7ubuntu0.20.04.4+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "tar",
        "purl": "pkg:deb/ubuntu/tar@1.30+dfsg-7ubuntu0.20.04.4+esm3?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.30+dfsg-7ubuntu0.20.04.4+esm3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.30+dfsg-6",
        "1.30+dfsg-7",
        "1.30+dfsg-7ubuntu0.20.04.1",
        "1.30+dfsg-7ubuntu0.20.04.2",
        "1.30+dfsg-7ubuntu0.20.04.3",
        "1.30+dfsg-7ubuntu0.20.04.4",
        "1.30+dfsg-7ubuntu0.20.04.4+esm1",
        "1.30+dfsg-7ubuntu0.20.04.4+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "tar",
            "binary_version": "1.34+dfsg-1ubuntu0.1.22.04.6"
          },
          {
            "binary_name": "tar-scripts",
            "binary_version": "1.34+dfsg-1ubuntu0.1.22.04.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "tar",
        "purl": "pkg:deb/ubuntu/tar@1.34+dfsg-1ubuntu0.1.22.04.6?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.34+dfsg-1ubuntu0.1.22.04.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.34+dfsg-1build1",
        "1.34+dfsg-1build2",
        "1.34+dfsg-1build3",
        "1.34+dfsg-1ubuntu0.1.22.04.1",
        "1.34+dfsg-1ubuntu0.1.22.04.2",
        "1.34+dfsg-1ubuntu0.1.22.04.3",
        "1.34+dfsg-1ubuntu0.1.22.04.4",
        "1.34+dfsg-1ubuntu0.1.22.04.5"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "tar",
            "binary_version": "1.35+dfsg-3ubuntu0.4"
          },
          {
            "binary_name": "tar-scripts",
            "binary_version": "1.35+dfsg-3ubuntu0.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "tar",
        "purl": "pkg:deb/ubuntu/tar@1.35+dfsg-3ubuntu0.4?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.35+dfsg-3ubuntu0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.34+dfsg-1.2ubuntu1",
        "1.34+dfsg-1.2ubuntu2",
        "1.34+dfsg-1.3ubuntu1",
        "1.34+dfsg-1.4",
        "1.35+dfsg-2~build1",
        "1.35+dfsg-2",
        "1.35+dfsg-3",
        "1.35+dfsg-3build1",
        "1.35+dfsg-3ubuntu0.1",
        "1.35+dfsg-3ubuntu0.2",
        "1.35+dfsg-3ubuntu0.3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "tar",
            "binary_version": "1.35+dfsg-3.1build1"
          },
          {
            "binary_name": "tar-scripts",
            "binary_version": "1.35+dfsg-3.1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "tar",
        "purl": "pkg:deb/ubuntu/tar@1.35+dfsg-3.1build1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.35+dfsg-3.1",
        "1.35+dfsg-3.1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "tar",
            "binary_version": "1.35+dfsg-4ubuntu0.4"
          },
          {
            "binary_name": "tar-scripts",
            "binary_version": "1.35+dfsg-4ubuntu0.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "tar",
        "purl": "pkg:deb/ubuntu/tar@1.35+dfsg-4ubuntu0.4?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.35+dfsg-4ubuntu0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.35+dfsg-3.1build1",
        "1.35+dfsg-3.1build2",
        "1.35+dfsg-4",
        "1.35+dfsg-4ubuntu0.1",
        "1.35+dfsg-4ubuntu0.2",
        "1.35+dfsg-4ubuntu0.3"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2026-5704",
  "modified": "2026-07-22T18:35:17Z",
  "published": "2026-04-06T16:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-5704"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-5704"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-5704"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8477-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8477-2"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8477-3"
    }
  ],
  "related": [
    "USN-8477-1",
    "USN-8477-2",
    "USN-8477-3"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-5704"
  ]
}

WID-SEC-W-2026-1057

Vulnerability from csaf_certbund - Published: 2026-04-12 22:00 - Updated: 2026-04-12 22:00

Summary

GNU tar: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Severity

Mittel

Scope

1 vulnerability in this advisory, including CVE-2026-5704.

CVE-2026-5704

Known affected: 1 product

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-5704 (GCVE-0-2026-5704)

RHSA-2026:61783

RHSA-2026:66018

RHSA-2026:66514

RLSA-2026:61581 (CVE-2026-18477)

RLSA-2026:61586 (CVE-2026-18477)

SUSE-SU-2026:22289-1

SUSE-SU-2026:22377-1

UBUNTU-CVE-2026-5704 (CVE-2026-5704)

WID-SEC-W-2026-1057

Tags

Sightings

Nomenclature

Related by attack behaviour