CVE-2026-24137 SUSE CVE security@suse.de SUSE Security Team SUSE CVE-2026-24137 Interim 1 1 2026-03-05T00:16:28Z current 2026-03-05T00:16:28Z 2026-03-05T00:16:28Z cve-database/bin/generate-cvrf-cve.pl 2020-12-27T01:00:00Z CVE-2026-24137 sigstore framework is a common go library shared across sigstore services and clients. In versions 1.10.3 and below, the legacy TUF client (pkg/tuf/client.go) supports caching target files to disk. It constructs a filesystem path by joining a cache base directory with a target name sourced from signed target metadata; however, it does not validate that the resulting path stays within the cache base directory. A malicious TUF repository can trigger arbitrary file overwriting, limited to the permissions that the calling process has. Note that this should only affect clients that are directly using the TUF client in sigstore/sigstore or are using an older version of Cosign. Public Sigstore deployment users are unaffected, as TUF metadata is validated by a quorum of trusted collaborators. This issue has been fixed in version 1.10.4. As a workaround, users can disable disk caching for the legacy client by setting SIGSTORE_NO_CACHE=true in the environment, migrate to https://github.com/sigstore/sigstore-go/tree/main/pkg/tuf, or upgrade to the latest sigstore/sigstore release. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). https://lists.suse.com/pipermail/sle-security-updates/2026-February/024365.html E-Mail link for SUSE-SU-2026:0592-1 https://lists.suse.com/pipermail/sle-security-updates/2026-March/024527.html E-Mail link for SUSE-SU-2026:0757-1 https://lists.suse.com/pipermail/sle-security-updates/2026-March/024541.html E-Mail link for SUSE-SU-2026:0777-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings SUSE Linux Enterprise Module for Basesystem 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS SUSE Linux Enterprise Module for Basesystem 15 SP7 SUSE Linux Enterprise Server 15 SP4-LTSS SUSE Linux Enterprise Server 15 SP4-TERADATA SUSE Linux Enterprise Server 15 SP5-LTSS SUSE Linux Enterprise Server 15 SP6-LTSS SUSE Linux Enterprise Module for Basesystem 15 SP7 SUSE Linux Enterprise Server 16.0 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP5 SUSE Linux Enterprise Server for SAP Applications 15 SP6 SUSE Linux Enterprise Module for Basesystem 15 SP7 SUSE Linux Enterprise Server for SAP applications 16.0 openSUSE Leap 15.6 openSUSE Tumbleweed cosign cosign-3.0.5-1.1 cosign-3.0.5-150400.3.35.1 cosign-bash-completion-3.0.5-1.1 cosign-bash-completion-3.0.5-150400.3.35.1 cosign-fish-completion-3.0.5-1.1 cosign-zsh-completion-3.0.5-1.1 cosign-zsh-completion-3.0.5-150400.3.35.1 vexctl vexctl-0.4.1+git78.f951e3a-1.1 vexctl-0.4.1+git78.f951e3a-150000.1.11.1 cosign-3.0.5-150400.3.35.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP7 cosign-bash-completion-3.0.5-150400.3.35.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP7 cosign-zsh-completion-3.0.5-150400.3.35.1 as a component of SUSE Linux Enterprise Module for Basesystem 15 SP7 cosign-3.0.5-150400.3.35.1 as a component of SUSE Linux Enterprise Server 15 SP4-TERADATA cosign-3.0.5-150400.3.35.1 as a component of openSUSE Leap 15.6 vexctl-0.4.1+git78.f951e3a-150000.1.11.1 as a component of openSUSE Leap 15.6 cosign-3.0.5-1.1 as a component of openSUSE Tumbleweed cosign-bash-completion-3.0.5-1.1 as a component of openSUSE Tumbleweed cosign-fish-completion-3.0.5-1.1 as a component of openSUSE Tumbleweed cosign-zsh-completion-3.0.5-1.1 as a component of openSUSE Tumbleweed vexctl-0.4.1+git78.f951e3a-1.1 as a component of openSUSE Tumbleweed cosign as a component of SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS cosign as a component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS cosign as a component of SUSE Linux Enterprise Server 15 SP4-LTSS cosign as a component of SUSE Linux Enterprise Server 15 SP5-LTSS cosign as a component of SUSE Linux Enterprise Server 15 SP6-LTSS cosign as a component of SUSE Linux Enterprise Server 16.0 vexctl as a component of SUSE Linux Enterprise Server 16.0 cosign as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP4 cosign as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP5 cosign as a component of SUSE Linux Enterprise Server for SAP Applications 15 SP6 cosign as a component of SUSE Linux Enterprise Server for SAP applications 16.0 vexctl as a component of SUSE Linux Enterprise Server for SAP applications 16.0 sigstore framework is a common go library shared across sigstore services and clients. In versions 1.10.3 and below, the legacy TUF client (pkg/tuf/client.go) supports caching target files to disk. It constructs a filesystem path by joining a cache base directory with a target name sourced from signed target metadata; however, it does not validate that the resulting path stays within the cache base directory. A malicious TUF repository can trigger arbitrary file overwriting, limited to the permissions that the calling process has. Note that this should only affect clients that are directly using the TUF client in sigstore/sigstore or are using an older version of Cosign. Public Sigstore deployment users are unaffected, as TUF metadata is validated by a quorum of trusted collaborators. This issue has been fixed in version 1.10.4. As a workaround, users can disable disk caching for the legacy client by setting SIGSTORE_NO_CACHE=true in the environment, migrate to https://github.com/sigstore/sigstore-go/tree/main/pkg/tuf, or upgrade to the latest sigstore/sigstore release. CVE-2026-24137 SUSE Linux Enterprise Module for Basesystem 15 SP7:cosign-3.0.5-150400.3.35.1 SUSE Linux Enterprise Module for Basesystem 15 SP7:cosign-bash-completion-3.0.5-150400.3.35.1 SUSE Linux Enterprise Module for Basesystem 15 SP7:cosign-zsh-completion-3.0.5-150400.3.35.1 SUSE Linux Enterprise Server 15 SP4-TERADATA:cosign-3.0.5-150400.3.35.1 openSUSE Leap 15.6:cosign-3.0.5-150400.3.35.1 openSUSE Leap 15.6:vexctl-0.4.1+git78.f951e3a-150000.1.11.1 openSUSE Tumbleweed:cosign-3.0.5-1.1 openSUSE Tumbleweed:cosign-bash-completion-3.0.5-1.1 openSUSE Tumbleweed:cosign-fish-completion-3.0.5-1.1 openSUSE Tumbleweed:cosign-zsh-completion-3.0.5-1.1 openSUSE Tumbleweed:vexctl-0.4.1+git78.f951e3a-1.1 moderate 5.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N