CVE-2026-53540: falha de baixa gravidade em Kludex python-multipart
Python-Multipart: Negative Content-Length in parse_form buffers the entire body in memory
Publicada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
8Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 3.7epss 0.3%
Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.31, parse_form() did not validate the Content-Length header before using it to bound its chunked read of the request body. A negative Content-Length turned the bounded read into a read-until-EOF, so the entire body was loaded into memory in a single read instead of in fixed-size chunks. This vulnerability is fixed in 0.0.31.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Produtos afetados
Kludex · python-multipartCVEs relacionadas — Kludex python-multipart
No mesmo produto, das mais perigosas para as menos.
CVE-2026-24486HIGHPython-Multipart has Arbitrary File Write via Non-Default ConfigurationEPSS 2.2%CVE-2024-24762HIGHpython-multipart vulnerable to content-type header Regular expression Denial of ServiceEPSS 1.5%CVE-2026-42561HIGHPython-Multipart: Denial of Service via unbounded multipart part headersEPSS 0.7%CVE-2024-53981HIGHpython-multipart has a Denial of service (DoS) via deformation `multipart/form-data` boundaryEPSS 0.6%CVE-2026-53539HIGHPython-Multipart: Quadratic-time querystring parsing with semicolon separators causes CPU denial of serviceEPSS 0.5%CVE-2026-40347MEDIUMPython-Multipart affected by Denial of Service via large multipart preamble or epilogue dataEPSS 0.4%