ESB-2026.4164

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4164 RHTAS 1.3.4 - Red Hat Trusted Artifact Signer Release 24 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Red Hat Trusted Artifact Signer OpenShift Operator Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2026-40175 CVE-2026-4926 CVE-2026-33186 Original Bulletin: https://access.redhat.com/errata/RHSA-2026:10172 Comment: CVSS (Max): 9.1 CVE-2026-33186 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N EPSS (Max): 0.1% (16th) CVE-2026-4926 2026-04-23 - --------------------------BEGIN INCLUDED TEXT-------------------- RHSA-2026:10172 - Security Advisory Issued: 2026-04-23 Updated: 2026-04-23 Synopsis RHTAS 1.3.4 - red hat trusted artifact signer release Type/Severity Security Advisory: Important Topic The 1.3.4 release of Red Hat Trusted Artifact Signer OpenShift Operator. For more details please visit the product documentation at https:// access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.3 Description The RHTAS Operator can be used with OpenShift Container Platform 4.16, 4.17, 4.18, 4.19 and 4.20 Solution Red Hat Trusted Artifact Signer simplifies cryptographic signing and verifying of software artifacts such as container images, binaries and source code changes. It is a self-managed on-premise deployment of the Sigstore project available at https://sigstore.dev Platform Engineers, Software Developers and Security Professionals may use RHTAS to ensure the integrity, transparency and assurance of their organization's software supply chain. For details on using the operator, refer to the product documentation at https: //access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.3 You can find the release notes for this version of Red Hat Trusted Artifact Signer at https://access.redhat.com/documentation/en-us/ red_hat_trusted_artifact_signer/1.3/html-single/release_notes/index Fixes (none) CVEs o CVE-2026-33186 o CVE-2026-40175 o CVE-2026-4926 References o https://access.redhat.com/documentation/en-us/ red_hat_trusted_artifact_signer/1.3 o https://access.redhat.com/documentation/en-us/ red_hat_trusted_artifact_signer/1.3/html-single/release_notes/index o https://access.redhat.com/security/updates/classification/ - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================