{
  "cveId": "CVE-2026-33055",
  "url": "https://patchblox.com/security/cve/CVE-2026-33055",
  "summary": "CVE-2026-33055 is fixed in 44 products on 1 platform, first by DEBIAN-CVE-2026-33055, released March 20, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "tar-rs incorrectly ignores PAX size headers if header size is nonzero",
  "description": "tar-rs is a tar archive reading/writing library for Rust. Versions 0.4.44 and below have conditional logic that skips the PAX size header in cases where the base header size is nonzero. As part of CVE-2025-62518, the astral-tokio-tar project was changed to correctly honor PAX size headers in the case where it was different from the base header. This is almost the inverse of the astral-tokio-tar issue. Any discrepancy in how tar parsers honor file size can be used to create archives that appear differently when unpacked by different archivers. In this case, the tar-rs (Rust tar) crate is an outlier in checking for the header size - other tar parsers (including e.g. Go archive/tar) unconditionally use the PAX size override. This can affect anything that uses the tar crate to parse archives and expects to have a consistent view with other parsers. This issue has been fixed in version 0.4.45.",
  "published": "2026-03-20T07:16:13Z",
  "severity": "Moderate",
  "cvss": 8.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
  "cwe": "Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)",
  "epss": 0.00422,
  "epssPercentile": 0.36728,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33055",
  "fixes": [
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      "product": "below",
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      "released": "2026-04-13T09:00:00Z"
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      "fix": "ALAS2023-2026-1567",
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      "released": "2026-04-13T09:00:00Z"
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      "released": "2026-04-13T09:00:00Z"
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      "fix": "ALAS2023-2026-1566",
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  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}