Upstream information
Description
OpenTelemetry Python provides the Python API and SDK for OpenTelemetry. Prior to 1.45.1, the opentelemetry-api function TraceState.from_header in opentelemetry/trace/span.py, reached through TraceContextTextMapPropagator.extract, parses inbound W3C tracestate headers with an unbounded optional-whitespace regular expression. A malformed header containing a long run of spaces or tabs without a following comma causes quadratic backtracking before the member-count limit is applied. Services using the default W3C Trace Context propagator can therefore spend excessive CPU time on one unauthenticated request when the HTTP server, parser, gateway, or custom carrier accepts a sufficiently large header. The processing can occupy a synchronous worker or delay unrelated requests on the same asynchronous event loop. The impact is limited to availability and does not expose or modify telemetry data or allow code execution. This issue is fixed in version 1.45.1.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having moderate severity.
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 5.3 | 5.3 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | None | None |
| Availability Impact | Low | Low |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | SUSE |
|---|---|
| Base Score | 6.9 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Attack Requirements | None |
| Privileges Required | None |
| User Interaction | None |
| Vulnerable System Confidentiality Impact | None |
| Vulnerable System Integrity Impact | None |
| Vulnerable System Availability Impact | Low |
| Subsequent System Confidentiality Impact | None |
| Subsequent System Integrity Impact | None |
| 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Please note that this evaluation state might be work in progress, incomplete or outdated.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-opentelemetry-api | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP7 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 15 SP7 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 16.0 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 16.1 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 16.2 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server for NVIDIA 16.1 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.2 | python-opentelemetry-api | Affected |
| openSUSE Leap 16.0 | python-opentelemetry-api | Affected |
| openSUSE Leap 16.1 | python-opentelemetry-api | 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-opentelemetry-api | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP5 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP4 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP5 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP6 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 15 SP4 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 15 SP5 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 15 SP6 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-opentelemetry-api | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Enterprise Storage 6 | python-opentelemetry-api | Affected |
| SUSE Enterprise Storage 7 | python-opentelemetry-api | Affected |
| SUSE Enterprise Storage 7.1 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Desktop 15 SP4 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP1 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP2 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP3 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP6 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 15 SP1 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 15 SP2 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server 15 SP3 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | python-opentelemetry-api | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | python-opentelemetry-api | Affected |
| SUSE Manager Proxy 4.0 | python-opentelemetry-api | Affected |
| SUSE Manager Proxy 4.1 | python-opentelemetry-api | Affected |
| SUSE Manager Proxy 4.2 | python-opentelemetry-api | Affected |
| SUSE Manager Proxy 4.3 | python-opentelemetry-api | Affected |
| SUSE Manager Retail Branch Server 4.0 | python-opentelemetry-api | Affected |
| SUSE Manager Retail Branch Server 4.1 | python-opentelemetry-api | Affected |
| SUSE Manager Retail Branch Server 4.2 | python-opentelemetry-api | Affected |
| SUSE Manager Retail Branch Server 4.3 | python-opentelemetry-api | Affected |
| SUSE Manager Server 4.0 | python-opentelemetry-api | Affected |
| SUSE Manager Server 4.1 | python-opentelemetry-api | Affected |
| SUSE Manager Server 4.2 | python-opentelemetry-api | Affected |
| SUSE Manager Server 4.3 | python-opentelemetry-api | Affected |
| openSUSE Leap 15.4 | python-opentelemetry-api | Affected |
| openSUSE Leap 15.5 | python-opentelemetry-api | Affected |
| openSUSE Leap 15.6 | python-opentelemetry-api | Affected |
SUSE Timeline for this CVE
CVE page created: Fri Oct 23 21:55:01 2026CVE page last modified: Fri Oct 23 21:55:01 2026