RHSA-2026:10131HighCVSS 9.1

Red Hat Security Advisory: RHTAS 1.3.4 - Red Hat Trusted Artifact Signer Release

Published
April 23, 2026
Last Modified
August 14, 2026

🔗 CVE IDs covered (3)

CVE-2026-4427 · pendingCVE-2026-4800 →CVE-2026-33186 →

📋 Description

CVE-2026-4427 — github.com/jackc/pgproto3: pgproto3: Denial of Service via negative field length in DataRow message CVE-2026-4800 — lodash: lodash: Arbitrary code execution via untrusted input in template imports CVE-2026-33186 — google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation

🎯 Affected products11

  • Red Hat Trusted Artifact Signer 1.3
  • registry.redhat.io/rhtas/certificate-transparency-rhel9@sha256:95b5aefafd17dd44794f6d5d1e75278faa5a74f2472db667409d1c88caaef1f1_amd64 as a component of Red Hat Trusted Artifact Signer 1.3
  • registry.redhat.io/rhtas/fulcio-rhel9@sha256:2d478c389bc89afc6b331bc662a84dfc1bbb9da2681ab6dc5ad36f44c346699a_amd64 as a component of Red Hat Trusted Artifact Signer 1.3
  • registry.redhat.io/rhtas/rekor-backfill-redis-rhel9@sha256:35b00d6cc82f90b4577af0d2c15153e255d6bb946349bb85f175216cefad1d07_amd64 as a component of Red Hat Trusted Artifact Signer 1.3
  • registry.redhat.io/rhtas/rekor-search-ui-rhel9@sha256:204dc28f6182267851d39eff08649e921877e2771d2c39acb798aa7896f5bcef_amd64 as a component of Red Hat Trusted Artifact Signer 1.3
  • registry.redhat.io/rhtas/rekor-server-rhel9@sha256:b4a5a2c2518dba5f7812c8b4112e25a0f867a4b187c23adfc727395f871c8ca6_amd64 as a component of Red Hat Trusted Artifact Signer 1.3
  • registry.redhat.io/rhtas/timestamp-authority-rhel9@sha256:a4aae20d4d24fc780fd7f613a54c6587538007b23e2a84b826c6812a19abd9ed_amd64 as a component of Red Hat Trusted Artifact Signer 1.3
  • registry.redhat.io/rhtas/trillian-database-rhel9@sha256:ab5c3e921b58d17bf6b596d2d7acf64a28b34f3f3a66720c1a07e6555ed9e0b8_amd64 as a component of Red Hat Trusted Artifact Signer 1.3
  • registry.redhat.io/rhtas/trillian-logserver-rhel9@sha256:523fa259ebf067ac3076748d4f5c86e01e5b1960034c0876add5d67b0ca21b0b_amd64 as a component of Red Hat Trusted Artifact Signer 1.3
  • registry.redhat.io/rhtas/trillian-logsigner-rhel9@sha256:f211db01228530de8ed46b05189c492e6c3629df1098da57d31f2765a22ef014_amd64 as a component of Red Hat Trusted Artifact Signer 1.3
  • registry.redhat.io/rhtas/trillian-redis-rhel9@sha256:22b8cfd123fdd66827b81f2431903198e33579906102b2f6295276cf3eb197a6_amd64 as a component of Red Hat Trusted Artifact Signer 1.3

✅ Remediation

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 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Workaround: To mitigate this issue, implement infrastructure-level normalization to ensure all incoming HTTP/2 `:path` headers are properly formatted with a leading slash before reaching the gRPC-Go server. This can be achieved by configuring a reverse proxy or API gateway to validate and normalize the `:path` header. Ensure that any such intermediary is properly configured and restarted to apply the changes, which may temporarily impact service availability.

🔗 References (8)