CVE-2026-86258

Katalog CVE

CVSS 5.9 · Medium EPSS 0,52%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'). Skor CVSS 3.1 5.9 (Medium) menurut vulncheck.com.

Deskripsi (NVD)

nbviewer through 1.0.1 contains a path traversal vulnerability in LocalFileHandler.can_show() that uses string-prefix comparison instead of proper path validation. Attackers can read files from sibling directories outside the configured root by requesting paths that share the root as a textual prefix, disclosing unintended notebooks and credentials.

Rincian

Terbit di NVD

6 September 2026

Terakhir diubah

10 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

5.9 (Medium), sumber vulncheck.com
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

EPSS (30 hari)

0,52% peluang dieksploitasi; lebih tinggi dari 42,7% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/jupyter/nbviewer
• https://github.com/jupyter/nbviewer/blob/1.0.1/nbviewer/providers/local/handlers.py#L92-L107
• https://github.com/jupyter/nbviewer/commit/aad36106f72a1ca7721310c6fccc677ce4c744a5
• https://github.com/jupyter/nbviewer/issues/1115
• https://www.vulncheck.com/advisories/nbviewer-through-1.0.1-path-traversal-via-localfilehandler