Upstream information
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.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having low severity.
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 3.7 | 3.7 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
| Attack Vector | Network | Network |
| Attack Complexity | High | High |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | Low | Low |
| Availability Impact | None | None |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | SUSE |
|---|---|
| Base Score | 6.3 |
| Vector | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N |
| Attack Vector | Network |
| Attack Complexity | High |
| Attack Requirements | None |
| Privileges Required | None |
| User Interaction | None |
| Vulnerable System Confidentiality Impact | None |
| Vulnerable System Integrity Impact | Low |
| Vulnerable System Availability Impact | None |
| Subsequent System Confidentiality Impact | None |
| Subsequent System Integrity Impact | None |
| Subsequent System Availability Impact | None |
| CVSSv4 Version | 4.0 |
SUSE Security Advisories:
- SUSE-SU-2026:22372-1, published 2026-06-26T08:00:10Z
- SUSE-SU-2026:2483-1, published 2026-06-22T11:54:04Z
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| SUSE Linux Enterprise Server 16.0 SUSE Linux Enterprise Server for SAP applications 16.0 |
| Patchnames: SUSE-SLES-16.0-1088 |
| openSUSE Leap 16.0 |
| Patchnames: openSUSE-Leap-16.0-1088 |
| openSUSE Tumbleweed |
| Patchnames: openSUSE-Tumbleweed-2026-11099 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Server 16.0 | python-python-multipart | Released |
| SUSE Linux Enterprise Server 16.1 | python-python-multipart | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-python-multipart | Released |
| SUSE Linux Enterprise Server for SAP applications 16.1 | python-python-multipart | Affected |
| openSUSE Leap 16.0 | python-python-multipart | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| openSUSE Leap 15.6 | python-python-multipart | Released |
SUSE Timeline for this CVE
CVE page created: Tue Jun 16 00:35:50 2026CVE page last modified: Mon Jul 6 18:59:47 2026