Upstream information
Description
Composer is a dependency Manager for the PHP language. From 1.0 until 2.2.30 and from 2.3.0 until 2.10.3, a malicious or compromised dependency can bypass the earlier CVE-2026-59946 binary-path hardening because Composer validates literal parent-directory segments only during dependency resolution, while the symlink and installed-metadata paths described by the advisory skip that validation. A package can ship an in-package binary symlink that resolves outside its installation directory, or attacker-influenced vendor/composer/installed.json metadata can provide an escaping binary path during a reinstall or regeneration of missing vendor/bin entries. The installed-metadata path is reachable only when the vendor directory was not populated by the same validated install run, such as when it is restored from an untrusted cache, copied from an earlier build stage, carried over from an older Composer run, or writable by a lower-trust build step. Composer can follow the path, change the external target's permissions to make it world-readable and executable, and create a runnable vendor/bin proxy to that external file. The issue does not directly read or transmit data and does not by itself provide remote code execution. This issue is fixed in versions 2.2.30 and 2.10.3.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 | 6.1 | 6.1 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N |
| Attack Vector | Local | Local |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | Required | Required |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | High | High |
| Integrity Impact | Low | Low |
| Availability Impact | None | None |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | SUSE |
|---|---|
| Base Score | 6.9 |
| Vector | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/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 | 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-2026:4283-1, published Tue Sep 22 19:04:39 CEST 2026
- SUSE-SU-2026:4288-1, published Tue Sep 22 23:03:41 CEST 2026
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| Container bci/php-apache:8.3.33-28.2 Container bci/php-fpm:8.3.33-28.2 Container bci/php:8.3.33-28.2 |
| |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-4283 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-4283 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-4283 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS |
| Patchnames: SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-4283 |
| SUSE Linux Enterprise Module for Web and Scripting 15 SP7 SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP7 |
| Patchnames: SUSE-SLE-Module-Web-Scripting-15-SP7-2026-4288 |
| SUSE Linux Enterprise Server 15 SP4-LTSS |
| Patchnames: SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-4283 |
| SUSE Linux Enterprise Server 15 SP5-LTSS |
| Patchnames: SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-4283 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 |
| Patchnames: SUSE-SLE-Product-SLES_SAP-15-SP4-2026-4283 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 |
| Patchnames: SUSE-SLE-Product-SLES_SAP-15-SP5-2026-4283 |
| openSUSE Tumbleweed |
| Patchnames: openSUSE-Tumbleweed-2026-11633 |
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 Module for Web and Scripting 15 SP7 | php-composer2 | Released |
| SUSE Linux Enterprise Server 15 SP7 | php-composer2 | Released |
| SUSE Linux Enterprise Server 16.0 | php-composer2 | Already fixed |
| SUSE Linux Enterprise Server 16.1 | php-composer2 | Already fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | php-composer2 | Released |
| SUSE Linux Enterprise Server for SAP applications 16.0 | php-composer2 | Already fixed |
| SUSE Linux Enterprise Server for SAP applications 16.1 | php-composer2 | Already fixed |
| openSUSE Leap 16.0 | php-composer2 | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | php-composer2 | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | php-composer2 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | php-composer2 | Released |
| SUSE Linux Enterprise Module for Web and Scripting 15 SP4 | php-composer2 | Affected |
| SUSE Linux Enterprise Module for Web and Scripting 15 SP5 | php-composer2 | Affected |
| SUSE Linux Enterprise Module for Web and Scripting 15 SP6 | php-composer2 | Affected |
| SUSE Linux Enterprise Server 15 SP4 | php-composer2 | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | php-composer2 | Released |
| SUSE Linux Enterprise Server 15 SP5 | php-composer2 | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | php-composer2 | Released |
| SUSE Linux Enterprise Server 15 SP6 | php-composer2 | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | php-composer2 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | php-composer2 | Released |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | php-composer2 | Released |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | php-composer2 | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4 | php-composer2 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | php-composer2 | Released |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | php-composer2 | Released |
| SUSE Manager Proxy 4.3 | php-composer2 | Affected |
| SUSE Manager Retail Branch Server 4.3 | php-composer2 | Affected |
| SUSE Manager Server 4.3 | php-composer2 | Affected |
| SUSE Manager Server LTS 4.3 | php-composer2 | Affected |
| openSUSE Leap 15.4 | php-composer2 | Released |
| openSUSE Leap 15.5 | php-composer2 | Affected |
| openSUSE Leap 15.6 | php-composer2 | Released |
| Container Status | ||
| bci/php-apache:8 bci/php-fpm:8 bci/php:8 | php-composer2 | Already fixed |
| bci/php bci/php-apache bci/php-fpm | php-composer2 | Released |
SUSE Timeline for this CVE
CVE page created: Sat Aug 29 13:11:02 2026CVE page last modified: Wed Sep 23 15:40:24 2026