CVE-2026-39399

Katalog CVE

CVSS 9.6 · Critical EPSS 0,82%

Kerentanan Improper Input Validation. Skor CVSS 3.1 9.6 (Critical) menurut github.com.

Deskripsi (NVD)

NuGet Gallery is a package repository that powers nuget.org. A security vulnerability exists in the NuGetGallery backend job’s handling of .nuspec files within NuGet packages. An attacker can supply a crafted nuspec file with malicious metadata, leading to cross package metadata injection that may result in remote code execution (RCE) and/or arbitrary blob writes due to insufficient input validation. The issue is exploitable via URI fragment injection using unsanitized package identifiers, allowing an attacker to control the resolved blob path. This enables writes to arbitrary blobs within the storage container, not limited to .nupkg files, resulting in potential tampering of existing content. This issue has been patched in commit 0e80f87628349207cdcaf55358491f8a6f1ca276.

Rincian

Terbit di NVD

14 April 2026

Terakhir diubah

24 Juli 2026

Status NVD

Awaiting Analysis

CVSS 3.1

9.6 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

EPSS (30 hari)

0,82% peluang dieksploitasi; lebih tinggi dari 56,1% 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/NuGet/NuGetGallery/commit/0e80f87628349207cdcaf55358491f8a6f1ca276
• https://github.com/NuGet/NuGetGallery/security/advisories/GHSA-9r3h-v4hx-rhfr