Upstream information
Description
Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.10.0rc1, twisted.web.http.HTTPChannel.headerReceived rejects a NUL byte in an HTTP header value but accepts a bare carriage return or bare line feed. Because Twisted splits header lines only on CRLF, a hidden Content-Length header can remain folded into another value while a lenient front end treats the bare character as a line terminator. The resulting framing disagreement can smuggle a following request past front-end access controls, poison a shared connection or cache, and expose a later client to the wrong response. This issue is an incomplete-fix residual of earlier Twisted request-smuggling protections. This issue is fixed in version 26.10.0rc1.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 5.4 | 7.2 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| Attack Vector | Network | Network |
| Attack Complexity | High | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Changed | Changed |
| Confidentiality Impact | Low | Low |
| 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:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Attack Requirements | Present |
| Privileges Required | None |
| User Interaction | None |
| Vulnerable System Confidentiality Impact | Low |
| Vulnerable System Integrity Impact | Low |
| Vulnerable System Availability Impact | None |
| Subsequent System Confidentiality Impact | Low |
| Subsequent System Integrity Impact | Low |
| Subsequent System Availability Impact | None |
| CVSSv4 Version | 4.0 |
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Please note that this evaluation state might be work in progress, incomplete or outdated.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 Desktop 15 SP7 | python-Twisted | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP7 | python-Twisted | Affected |
| SUSE Linux Enterprise Server 16.0 | python-Twisted | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | python-Twisted | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-Twisted | Affected |
| openSUSE Leap 16.0 | python-Twisted | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python-Twisted | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | python-Twisted | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP4 | python-Twisted | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP5 | python-Twisted | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP6 | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP4 | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP5 | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP6 | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | python-Twisted | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-Twisted | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-Twisted | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-Twisted | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | python-Twisted | Affected |
| SUSE Enterprise Storage 6 | python-Twisted | Affected |
| SUSE Enterprise Storage 7 | python-Twisted | Affected |
| SUSE Enterprise Storage 7.1 | python-Twisted | Affected |
| SUSE Linux Enterprise Desktop 15 SP4 | python-Twisted | Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | python-Twisted | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python-Twisted | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python-Twisted | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP3 | python-Twisted | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP1 | python-Twisted | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | python-Twisted | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | python-Twisted | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | python-Twisted | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP1 | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP2 | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP3 | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | python-Twisted | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | python-Twisted | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | python-Twisted | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | python-Twisted | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | python-Twisted | Affected |
| SUSE Manager Proxy 4.0 | python-Twisted | Affected |
| SUSE Manager Proxy 4.1 | python-Twisted | Affected |
| SUSE Manager Proxy 4.2 | python-Twisted | Affected |
| SUSE Manager Proxy 4.3 | python-Twisted | Affected |
| SUSE Manager Retail Branch Server 4.0 | python-Twisted | Affected |
| SUSE Manager Retail Branch Server 4.1 | python-Twisted | Affected |
| SUSE Manager Retail Branch Server 4.2 | python-Twisted | Affected |
| SUSE Manager Retail Branch Server 4.3 | python-Twisted | Affected |
| SUSE Manager Server 4.0 | python-Twisted | Affected |
| SUSE Manager Server 4.1 | python-Twisted | Affected |
| SUSE Manager Server 4.2 | python-Twisted | Affected |
| SUSE Manager Server 4.3 | python-Twisted | Affected |
| openSUSE Leap 15.3 | python-Twisted | Affected |
| openSUSE Leap 15.4 | python-Twisted | Affected |
| openSUSE Leap 15.5 | python-Twisted | Affected |
| openSUSE Leap 15.6 | python-Twisted | Affected |
SUSE Timeline for this CVE
CVE page created: Tue Oct 27 17:50:11 2026CVE page last modified: Wed Oct 28 14:19:28 2026