CVE-2026-82397

Katalog CVE

CVSS 7.5 · High EPSS 0,35%

Kerentanan Uncontrolled Resource Consumption. Skor CVSS 3.1 7.5 (High) menurut github.com.

Deskripsi (NVD)

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.8, Tornado parses application/x-www-form-urlencoded request bodies with urllib.parse.parse_qs in tornado/escape.py without passing max_num_fields. RequestHandler._execute in tornado/web.py parses the body before handler dispatch through HTTPServerRequest._parse_body and parse_body_arguments in tornado/httputil.py, so an unauthenticated request body containing millions of separator-delimited fields can synchronously stall the single-threaded event loop and delay every connection. The body is bounded only by max_buffer_size, which defaults to 104857600 bytes. This issue is fixed in version 6.5.8.

Rincian

Terbit di NVD

31 Agustus 2026

Terakhir diubah

9 September 2026

Status NVD

Deferred

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-400: Uncontrolled Resource Consumption
CWE-1284: Improper Validation of Specified Quantity in Input

EPSS (30 hari)

0,35% peluang dieksploitasi; lebih tinggi dari 26,2% 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/tornadoweb/tornado/commit/8d6363ed7b69d5f0da806efe34d256627a2191de
• https://github.com/tornadoweb/tornado/pull/3704
• https://github.com/tornadoweb/tornado/releases/tag/v6.5.8
• https://github.com/tornadoweb/tornado/security/advisories/GHSA-mpf4-983q-p7j4