CVE-2026-40347 Python-Multipart affected by Denial of Service via large multipart preamble or epilogue data

Python-Multipart is a streaming multipart parser for Python. Versions prior to 0.0.26 have a denial of service vulnerability when parsing crafted multipart/form-data requests with large preamble or epilogue sections. Upgrade to version 0.0.26 or later, which skips ahead to the next boundary...

CVE-2026-40347 Python-Multipart affected by Denial of Service via large multipart preamble or epilogue data

Python-Multipart is a streaming multipart parser for Python. Versions prior to 0.0.26 have a denial of service vulnerability when parsing crafted multipart/form-data requests with large preamble or epilogue sections. Upgrade to version 0.0.26 or later, which skips ahead to the next boundary...

PT-2026-33212

Name of the Vulnerable Software and Affected Versions Python-Multipart versions prior to 0.0.26 Description An issue exists when parsing crafted multipart/form-data requests containing large preamble or epilogue sections. Two inefficient parsing paths can be abused: the parser handles leading CR...