CVE-2026-71513

Katalog CVE

CVSS 8.8 · High EPSS 1,1%

Kerentanan Deserialization of Untrusted Data pada nltk. Skor CVSS 3.1 8.8 (High) menurut vulncheck.com.

Deskripsi (NVD)

NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft untrusted transition-parser models that execute arbitrary commands when TransitionParser.parse loads the model through allowlisted_pickle_load.

Rincian

Terbit di NVD

22 Agustus 2026

Terakhir diubah

16 September 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-502: Deserialization of Untrusted Data

EPSS (30 hari)

1,1% peluang dieksploitasi; lebih tinggi dari 64,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/nltk/nltk/commit/c3e37113742a1ebeeb4f2ca58941f320f98805ea patch
• https://www.vulncheck.com/advisories/nltk-through-remote-code-execution-via-allowlistunpickler-dotted-name-byp... advisory pihak ketiga · patch
• https://github.com/nltk/nltk product
• https://github.com/nltk/nltk/blob/v3.10.2/nltk/picklesec.py#L119-L124 product