Upstream information
Description
Dulwich before 1.2.20 contains a commit object parsing vulnerability where the read path in _parse_commit resolves a duplicate tree header to the last occurrence instead of the first, diverging from core git's resolution behavior, while Poetry 2.5.1 ships this version and uses dulwich by default for git dependency installation. Attackers can craft a commit object with two tree headers so that reviewers and CI using git see a benign tree while Poetry's dulwich-based checkout resolves to a different attacker-controlled tree containing malicious build scripts such as setup.py, resulting in unreviewed code execution on the install or build host.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | CNA (VulnCheck) | SUSE |
|---|---|---|
| Base Score | 8.8 | 8.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | Required | Required |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | High | High |
| Integrity Impact | High | High |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | CNA (VulnCheck) |
|---|---|
| Base Score | 8.6 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| Attack Vector | Network |
| Attack Complexity | Low |
| Attack Requirements | None |
| Privileges Required | None |
| User Interaction | Active |
| Vulnerable System Confidentiality Impact | High |
| Vulnerable System Integrity Impact | High |
| Vulnerable System Availability Impact | High |
| 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Please note that this evaluation state might be work in progress, incomplete or outdated.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 | python3-dulwich | Affected |
| SUSE Linux Enterprise High Performance Computing 12 | python-dulwich | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | python3-dulwich | Affected |
| SUSE Linux Enterprise Server 15 SP7 | python3-dulwich | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | python3-dulwich | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | python3-dulwich | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | python3-dulwich | Affected |
| SUSE Linux Enterprise Module for Public Cloud 12 | python-dulwich | Affected |
| SUSE Linux Enterprise Server 12 SP5 | python-dulwich | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | python-dulwich | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | python3-dulwich | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | python3-dulwich | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | python3-dulwich | Affected |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | python-dulwich | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | python-dulwich | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python3-dulwich | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python3-dulwich | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python3-dulwich | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Linux Enterprise Desktop 15 SP4 | python3-dulwich | Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | python3-dulwich | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | python3-dulwich | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | python3-dulwich | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | python3-dulwich | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | python3-dulwich | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | python3-dulwich | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | python3-dulwich | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | python3-dulwich | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | python3-dulwich | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | python3-dulwich | Affected |
| SUSE Linux Enterprise Server 12 | python-dulwich | Affected |
| SUSE Linux Enterprise Server 12 SP3 | python-dulwich | Affected |
| SUSE Linux Enterprise Server 12 SP4 | python-dulwich | Affected |
| SUSE Linux Enterprise Server 15 SP4 | python3-dulwich | Affected |
| SUSE Linux Enterprise Server 15 SP5 | python3-dulwich | Affected |
| SUSE Linux Enterprise Server 15 SP6 | python3-dulwich | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 | python-dulwich | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | python-dulwich | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | python-dulwich | Affected |
| SUSE Manager Proxy 4.3 | python3-dulwich | Affected |
| SUSE Manager Proxy LTS 4.3 | python3-dulwich | Affected |
| SUSE Manager Retail Branch Server 4.3 | python3-dulwich | Affected |
| SUSE Manager Retail Branch Server LTS 4.3 | python3-dulwich | Affected |
| SUSE Manager Server 4.3 | python3-dulwich | Affected |
| SUSE Manager Server LTS 4.3 | python3-dulwich | Affected |
| openSUSE Leap 15.4 | python3-dulwich | Affected |
| openSUSE Leap 15.5 | python3-dulwich | Affected |
| openSUSE Leap 15.6 | python3-dulwich | Affected |
SUSE Timeline for this CVE
CVE page created: Thu Nov 5 15:56:43 2026CVE page last modified: Thu Nov 5 15:56:43 2026