python-multipart: Python-Multipart is a streaming multipart parser for Python
CVE-2026-53540 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-53540, released June 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-multipart · Debian 14 | 0.0.32-1 | DEBIAN-CVE-2026-53540 | Jun 22, 2026 |
| python-python-multipart · opensuse-leap 16.0 | 0.0.20-160000.5.1 | OPENSUSE-SU-2026:21066-1 | Jun 26, 2026 |
| python-python-multipart · sles 16.0 | 0.0.20-160000.5.1 | SUSE-SU-2026:22372-1 | Jun 26, 2026 |
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