Upstream information
Description
YAML versions before 1.27_001 for Perl allow a loaded perl/glob document to replace any package variable, which can lead to arbitrary code execution.A perl/glob document names a package and a symbol, and supplies the value assigned to it. Nothing restricts the name, so the target can be @INC or YAML's own load options.
A perl/glob document that sets $YAML::LoadCode or $YAML::UseCode turns on code loading, which is off by default, for every later Load() in the process. A perl/code document is then passed to a string eval, so an attacker who supplies two documents to separate Load() calls in one process can execute arbitrary Perl code.
SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | SUSE |
|---|---|
| Base Score | 7.8 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality Impact | High |
| Integrity Impact | High |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
| CVSS detail | SUSE |
|---|---|
| Base Score | 8.5 |
| Vector | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| Attack Vector | Local |
| Attack Complexity | Low |
| Attack Requirements | None |
| Privileges Required | None |
| User Interaction | Passive |
| 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Please note that this evaluation state might be work in progress, incomplete or outdated.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 | perl-YAML | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP7 | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP7 | perl-YAML | Affected |
| SUSE Linux Enterprise Server 16.0 | perl-YAML | Not affected |
| SUSE Linux Enterprise Server 16.1 | perl-YAML | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | perl-YAML | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | perl-YAML | Not affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | perl-YAML | Not affected |
| openSUSE Leap 16.0 | perl-YAML | Not affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP4 | perl-YAML | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP5 | perl-YAML | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP6 | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP4 | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP5 | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP6 | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | perl-YAML | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | perl-YAML | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | perl-YAML | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | perl-YAML | Affected |
| SUSE Enterprise Storage 6 | perl-YAML | Affected |
| SUSE Enterprise Storage 7 | perl-YAML | Affected |
| SUSE Enterprise Storage 7.1 | perl-YAML | Affected |
| SUSE Linux Enterprise Desktop 15 | perl-YAML | Affected |
| SUSE Linux Enterprise Desktop 15 SP1 | perl-YAML | Affected |
| SUSE Linux Enterprise Desktop 15 SP2 | perl-YAML | Affected |
| SUSE Linux Enterprise Desktop 15 SP3 | perl-YAML | Affected |
| SUSE Linux Enterprise Desktop 15 SP4 | perl-YAML | Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | perl-YAML | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | perl-YAML | Affected |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 | perl-YAML | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP1 | perl-YAML | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP2 | perl-YAML | Affected |
| SUSE Linux Enterprise Module for Development Tools 15 SP3 | perl-YAML | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | perl-YAML | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | perl-YAML | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP1 | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP2 | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP3 | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise Server 15-LTSS | perl-YAML | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 | perl-YAML | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | perl-YAML | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | perl-YAML | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | perl-YAML | Affected |
| SUSE Manager Proxy 4.0 | perl-YAML | Affected |
| SUSE Manager Proxy 4.1 | perl-YAML | Affected |
| SUSE Manager Proxy 4.2 | perl-YAML | Affected |
| SUSE Manager Proxy 4.3 | perl-YAML | Affected |
| SUSE Manager Retail Branch Server 4.0 | perl-YAML | Affected |
| SUSE Manager Retail Branch Server 4.1 | perl-YAML | Affected |
| SUSE Manager Retail Branch Server 4.2 | perl-YAML | Affected |
| SUSE Manager Retail Branch Server 4.3 | perl-YAML | Affected |
| SUSE Manager Server 4.0 | perl-YAML | Affected |
| SUSE Manager Server 4.1 | perl-YAML | Affected |
| SUSE Manager Server 4.2 | perl-YAML | Affected |
| SUSE Manager Server 4.3 | perl-YAML | Affected |
| openSUSE Leap 15.3 | perl-YAML | Affected |
| openSUSE Leap 15.4 | perl-YAML | Affected |
| openSUSE Leap 15.5 | perl-YAML | Affected |
| openSUSE Leap 15.6 | perl-YAML | Affected |
| Products at an unknown state of their lifecycle. | ||
| SUSE Linux Enterprise Server for NVIDIA 16.1 | perl-YAML | Not affected |
SUSE Timeline for this CVE
CVE page created: Mon Oct 5 13:27:27 2026CVE page last modified: Mon Oct 5 21:27:47 2026