CVE-2026-53540 - Python-Multipart: Negative Content-Length in parse_form buffers the entire body in memory

CVE-2026-53540 - Python-Multipart: Negative Content-Length in parse_form buffers the entire body in memory

https://cvefeed.io/rssfeed/latest.atom / Mon, 06/22/2026 - 22:01
CVE ID :CVE-2026-53540
Published : June 22, 2026, 4:58 p.m. | 2 hours, 41 minutes ago
Description :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.
Severity: 0.0 | NA
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