{"answers":{"affected":"5 open source packages ship an affected version, including github.com/siderolabs/omni.","exploited":"There is no known exploitation of CVE-2026-45726 in the wild and no public exploit code.","fix":"Upgrade github.com/siderolabs/omni to a fixed version for your release line: 1.6.6 or 1.7.3.","what":"CVE-2026-45726 is a high-severity missing authorization vulnerability in siderolabs omni, published on 17 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-45726 and fix it if it is affected.\n\nWhat it is: CVE-2026-45726 is a high-severity missing authorization vulnerability in siderolabs omni, published on 17 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-45726 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/siderolabs/omni (Go): affected from 1.3.0; fixed in 1.6.6, 1.7.3\n- github.com/siderolabs/omni (Go): affected from 1.3.0; fixed in 1.6.6\n- github.com/siderolabs/omni (Go): affected from 1.3.0; fixed in 1.6.6\n- github.com/siderolabs/omni (Go): affected from 1.7.0; fixed in 1.7.3\n- github.com/siderolabs/omni (Go): affected from 1.7.0; fixed in 1.7.3\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-45726/ (Markdown: https://insights.sbomify.com/CVE-2026-45726/index.md)","id":"CVE-2026-45726","markdown":"https://insights.sbomify.com/CVE-2026-45726/index.md","name":"CVE-2026-45726","record":{"aliases":["GHSA-wv8c-6mx2-xf4j","GO-2026-5725"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["privilege_escalation","data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Kubernetes management platform","requires_auth":"low_privilege","summary":"Reader-level users can retrieve imported cluster CA keys, enabling full control over the Kubernetes cluster and bypassing authorization boundaries.","user_interaction":"required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-732","name":"Incorrect Permission Assignment for Critical Resource"},{"id":"CWE-522","name":"Insufficiently Protected Credentials"},{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"Omni manages Kubernetes on bare metal, virtual machines, or in a cloud. From 1.3.0 until 1.6.6 and 1.7.3, importing a standalone Talos cluster creates an ImportedClusterSecrets resource containing the cluster's complete CA secrets bundle. The access rules in internal/backend/runtime/omni/state_access.go allow an authenticated user with the Reader role to retrieve the resource through ResourceService if the importing actor has not rotated those secrets, exposing Kubernetes, Talos, and etcd CA private keys plus the service-account key. The Kubernetes CA private key permits certificate signing for privileged identities such as system:masters and provides control of the imported cluster outside Omni's authorization boundary, including its workloads, credentials, and secrets. This issue is fixed in versions 1.6.6 and 1.7.3.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Omni: Reader-level users can retrieve imported cluster CA keys via ResourceService","id":"CVE-2026-45726","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":5,"n_references":7,"next":{"headline":"CloakBrowser: Unauthenticated path traversal via fingerprint parameter in cloakserve leads to arbitrary directory deletion","id":"CVE-2026-45727"},"packages":[{"ecosystem":"Go","fixed":["1.6.6","1.7.3"],"introduced":["1.3.0","1.7.0"],"last_affected":[],"package":"github.com/siderolabs/omni","purl":"pkg:golang/github.com/siderolabs/omni","source":"GO-2026-5725"},{"ecosystem":"Go","fixed":["1.6.6"],"introduced":["1.3.0"],"last_affected":[],"package":"github.com/siderolabs/omni","purl":null,"source":"GHSA-wv8c-6mx2-xf4j"},{"ecosystem":"Go","fixed":["1.6.6"],"introduced":["1.3.0"],"last_affected":[],"package":"github.com/siderolabs/omni","purl":"pkg:golang/github.com/siderolabs/omni","source":"GHSA-wv8c-6mx2-xf4j"},{"ecosystem":"Go","fixed":["1.7.3"],"introduced":["1.7.0"],"last_affected":[],"package":"github.com/siderolabs/omni","purl":null,"source":"GHSA-wv8c-6mx2-xf4j"},{"ecosystem":"Go","fixed":["1.7.3"],"introduced":["1.7.0"],"last_affected":[],"package":"github.com/siderolabs/omni","purl":"pkg:golang/github.com/siderolabs/omni","source":"GHSA-wv8c-6mx2-xf4j"}],"prev":{"headline":"compliance-trestle Remote Fetching Mechanism has an Arbitrary File Write via Cache Path Traversal","id":"CVE-2026-45725"},"products":["omni"],"published":"2026-09-17","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-21","vendors":["siderolabs"]},"summary":"Reader-level users can retrieve imported cluster CA keys, enabling full control over the Kubernetes cluster and bypassing authorization boundaries.","url":"https://insights.sbomify.com/CVE-2026-45726/"}