CVE-2026-53538: Python-multipart: güvenlik açığı

Açıklama (NVD)

Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.30, QuerystringParser treated ; as a field separator in application/x-www-form-urlencoded bodies, in addition to &. The WHATWG URL standard, modern browsers, and Python's urllib.parse (since the CVE-2021-23336 fix) treat only & as a separator. This creates a parser differential: the same bytes are tokenized into different fields than a WHATWG compliant intermediary would produce, allowing an attacker to smuggle extra form fields past an upstream body inspecting component. This vulnerability is fixed in 0.0.30.

Özet bilgiler

Ürün

Fastapiexpert Python-multipart

CVSS v3.1

3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

%0,26 (yüzdelik 17)

CWE

CWE-436

Yama

Yok / bilinmiyor

Etkilenen sürümler

Kaynaklar

• NVD kaydı
• github.com
• CWE-436