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Tracking
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-6jv3-5f52-599m | python-multipart: Semicolon treated as querystring field separator enables parameter smuggling |
Tue, 23 Jun 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 22 Jun 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Kludex
Kludex python-multipart |
|
| Vendors & Products |
Kludex
Kludex python-multipart |
Mon, 22 Jun 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.30, QuerystringParser treated ; as a field separator in application/x-www-form-urlencoded bodies, in addition to &. The WHATWG URL standard, modern browsers, and Python's urllib.parse (since the CVE-2021-23336 fix) treat only & as a separator. This creates a parser differential: the same bytes are tokenized into different fields than a WHATWG compliant intermediary would produce, allowing an attacker to smuggle extra form fields past an upstream body inspecting component. This vulnerability is fixed in 0.0.30. | |
| Title | Python-Multipart: Semicolon treated as querystring field separator enables parameter smuggling | |
| Weaknesses | CWE-436 CWE-444 |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-23T16:08:22.050Z
Reserved: 2026-06-09T18:13:07.263Z
Link: CVE-2026-53538
Updated: 2026-06-23T14:49:25.150Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-06-22T20:00:06Z
Github GHSA