cvedb.io
CVE-2026-53540
LOW · CVSS 3.7
EPSS exploitation probability: 0%
Published 2026-06-22T18:16:44.497 · Last modified 2026-06-26T19:50:18.340

Summary

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.

Affected products

fastapiexpert — python-multipart

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.