Composer: Mehrere Schwachstellen
WID-SEC-2026-3072 · first 28.08.2026 · updated 02.10.2026 · CVSS 8,8
What it is about
Composer ist ein Open-Source-Abhängigkeitsmanager für PHP-Projekte. Ein Angreifer kann mehrere Schwachstellen in Composer ausnutzen, um Sicherheitsvorkehrungen zu umgehenn und beliebigen Code auszuführen.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- Sicherheitsvorkehrungen zu umgehenn
- beliebigen Code auszuführen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- SUSE Linux
- SUSE openSUSE
- Open Source Composer <2.10.3
- Open Source Composer <2.2.30
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source Composer 2.10.3
- Open Source Composer 2.2.30
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- GitHub Security Advisory github.com
- GitHub Security Advisory github.com
- openSUSE Security Update OPENSUSE-SU-2026:11633-1 vom 2026-08-31 lists.opensuse.org
- Red Hat Security Advisory RHSA-2026:63151 vom 2026-09-03 access.redhat.com
- openSUSE Security Update OPENSUSE-SU-2026:11689-1 vom 2026-09-06 lists.opensuse.org
- SUSE Security Update SUSE-SU-2026:4059-1 vom 2026-09-12 lists.suse.com
- SUSE Security Update SUSE-SU-2026:4288-1 vom 2026-09-23 lists.suse.com
- SUSE Security Update SUSE-SU-2026:4283-1 vom 2026-09-22 lists.suse.com
- SUSE Security Update SUSE-SU-2026:23943-1 vom 2026-10-01 lists.suse.com
CVE: CVE-2026-59944, CVE-2026-84361
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.