{"cve":"CVE-2022-36103","nvd":{"published":"2022-09-13T17:15:08.320","modified":"2026-06-17T04:52:55.647","status":"Modified","description":"Talos Linux is a Linux distribution built for Kubernetes deployments. Talos worker nodes use a join token to get accepted into the Talos cluster. Due to improper validation of the request while signing a worker node CSR (certificate signing request) Talos control plane node might issue Talos API certificate which allows full access to Talos API on a control plane node. Accessing Talos API with full level access on a control plane node might reveal sensitive information which allows full level access to the cluster (Kubernetes and Talos PKI, etc.). Talos API join token is stored in the machine configuration on the worker node. When configured correctly, Kubernetes workloads don't have access to the machine configuration, but due to a misconfiguration workload might access the machine configuration and reveal the join token. This problem has been fixed in Talos 1.2.2. Enabling the Pod Security Standards mitigates the vulnerability by denying hostPath mounts and host networking by default in the baseline policy. Clusters that don't run untrusted workloads are not affected. Clusters with correct Pod Security configurations which don't allow hostPath mounts, and secure access to cloud metadata server (or machine configuration is not supplied via cloud metadata server) are not affected.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-863","CWE-732"],"references":["https://github.com/siderolabs/talos/commit/9eaf33f3f274e746ca1b442c0a1a0dae0cec088f","https://github.com/siderolabs/talos/releases/tag/v1.2.2","https://github.com/siderolabs/talos/security/advisories/GHSA-7hgc-php5-77qq","https://github.com/siderolabs/talos/commit/9eaf33f3f274e746ca1b442c0a1a0dae0cec088f","https://github.com/siderolabs/talos/releases/tag/v1.2.2"],"products":["siderolabs:talos_linux"],"source":"nvd","synced_at":"2026-10-19T21:35:14.992143698+00:00"},"epss":{"cve":"CVE-2022-36103","score":0.00694,"percentile":0.52944,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-7hgc-php5-77qq","url":"https://osv.dev/vulnerability/GHSA-7hgc-php5-77qq","summary":"Talos worker join token can be used to get elevated access level to the Talos API","modified":"2024-08-21T16:28:35.278112Z","packages":[{"ecosystem":"Go","name":"github.com/talos-systems/talos","purl":"pkg:golang/github.com/talos-systems/talos","ranges":["<1.2.2"],"fixed":["1.2.2"]}]},{"id":"GO-2022-0995","url":"https://osv.dev/vulnerability/GO-2022-0995","summary":"Talos worker join token can be used to get elevated access level to the Talos API in github.com/talos-systems/talos","modified":"2026-03-03T04:52:33.821306Z","packages":[{"ecosystem":"Go","name":"github.com/talos-systems/talos","purl":"pkg:golang/github.com/talos-systems/talos","ranges":["<1.2.2"],"fixed":["1.2.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}