CVE Watch15 jul 2026

CVE-2026-42561

Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.27, python-multipart has a denial of service vulnerability in mult

CVSS

7.5

Alto

EPSS

0.5%

p42

KEV

—

Exploit Today

0-100

Publicado: 13 may 2026 · Última mod.: 15 jul 2026 · CWE-770 · CWE-606

EPSS · 30d

0.5%EPSS · 30 días0.5%

2026-06-302026-07-17

Descripción técnica

Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.27, python-multipart has a denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data, MultipartParser previously had no limit on the number of part headers or the size of an individual part header. An attacker could send a request with either many repeated headers without terminating the header block or a single very large header value, causing excessive CPU work before request rejection or completion. This vulnerability is fixed in 0.0.27.

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