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CVE-2026-18477

🗓️ 03 Aug 2026 15:34:36Reported by redhatType 
cve
 cve
🔗 web.nvd.nist.gov👁 4 Views

TOCTOU in GNU tar incremental dumpdir rename handling allows a local attacker with write access to influence restoration outside the extraction directory.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-18477
3 Aug 202615:34
attackerkb
cvelist
Cvelist
CVE-2026-18477 Tar: tar: toctou in incremental dumpdir 'x' rename handling allows restore path escape
3 Aug 202615:34
cvelist
euvd
EUVD
EUVD-2026-52336
3 Aug 202618:30
euvd
nvd
NVD
CVE-2026-18477
3 Aug 202617:16
nvd
ptsecurity
Positive Technologies
PT-2026-67429
3 Aug 202600:00
ptsecurity
redhatcve
RedhatCVE
CVE-2026-18477
3 Aug 202615:34
redhatcve
[
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    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 10",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tar",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:10"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 6",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tar",
    "defaultStatus": "unknown",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:6"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tar",
    "defaultStatus": "unknown",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tar",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tar",
    "defaultStatus": "affected",
    "cpes": [
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    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "aardvark-dns",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:hummingbird:1"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "chunkah",
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  },
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    "vendor": "Red Hat",
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    ]
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    "vendor": "Red Hat",
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    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "grafana13.1",
    "defaultStatus": "unaffected",
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    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "netavark",
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    "cpes": [
      "cpe:/a:redhat:hummingbird:1"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "nodejs26",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:hummingbird:1"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "python-cryptography",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:hummingbird:1"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "rust",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:hummingbird:1"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "rust-rpm-sequoia",
    "defaultStatus": "unaffected",
    "cpes": [
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    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tar",
    "defaultStatus": "affected",
    "cpes": [
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    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "yarnpkg",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:hummingbird:1"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "rhcos",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:openshift:4"
    ]
  }
]

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03 Aug 2026 17:38Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.14.4
4