Interpretation Conflict Affecting python-multipart package, versions [,0.0.30)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-PYTHONMULTIPART-17345733
- published16 Jun 2026
- disclosed15 Jun 2026
- credit0xkakash1, sammiee5311
Introduced: 15 Jun 2026
CVE-2026-53537 (opens in a new tab)How to fix?
Upgrade python-multipart to version 0.0.30 or higher.
Overview
python-multipart is an A streaming multipart parser for Python
Affected versions of this package are vulnerable to Interpretation Conflict through the parse_options_header function. An attacker can bypass field name or filename-based access controls, or manipulate file upload destinations by submitting specially crafted multipart/form-data requests that exploit differences in parameter interpretation between upstream components and the backend.