{"id":"CVE-2026-32711","aliases":["GHSA-v856-2rf8-9f28","PYSEC-2026-2266"],"url":"https://o3.security/vulnerability/CVE-2026-32711","summary":"pydicom: Path traversal in FileSet/DICOMDIR ReferencedFileID allows file access outside the File-set root","details":"pydicom is a pure Python package for working with DICOM files. Versions 2.0.0-rc.1 through 3.0.1 are vulnerable to Path Traversal through a maliciously crafted DICOMDIR ReferencedFileID when it is set to a path outside the File-set root. pydicom resolves the path only to confirm that it exists, but does not verify that the resolved path remains under the File-set root. Subsequent public FileSet operations such as copy(), write(), and remove()+write(use_existing=True) use that unchecked path in file I/O operations. This allows arbitrary file read/copy and, in some flows, move/delete outside the File-set root. This issue has been fixed in version 3.0.2.","published":"2026-03-20T01:26:15.182Z","modified":"2026-07-15T01:49:04.657935099Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"pydicom","fixedVersion":"3.0.2"},{"ecosystem":"PyPI","name":"pydicom","fixedVersion":"2.4.5"}],"fix":{"url":"https://github.com/pydicom/pydicom/commit/6414f01a053dff925578799f5a7208d2ae585e82","label":"pydicom/pydicom@6414f01"},"references":[{"type":"WEB","url":"https://github.com/pydicom/pydicom/releases/tag/v3.0.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32711.json"},{"type":"ADVISORY","url":"https://github.com/pydicom/pydicom/security/advisories/GHSA-v856-2rf8-9f28"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32711"},{"type":"FIX","url":"https://github.com/pydicom/pydicom/commit/6414f01a053dff925578799f5a7208d2ae585e82"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:04.657935099Z"}}