{"id":"CVE-2026-42283","summary":"DevSpace UI Server WebSocket CheckOrigin does not validate source","details":"DevSpace is a client-only developer tool for cloud-native development with Kubernetes. Prior to 6.3.21, DevSpace's UI server WebSocket accepts connections from all origins by default, and therefore several endpoints are exposed via this WebSocket. When a developer runs the DevSpace UI and at the same time uses a browser to access the internet, a malicious website they visit can use their browser to establish a cross-origin WebSocket connection to ws://127.0.0.1:8090. This vulnerability is fixed in 6.3.21.","aliases":["GHSA-hqwm-7x7x-8379","GO-2026-5433"],"modified":"2026-07-31T18:30:35.787838722Z","published":"2026-05-14T15:44:22.499Z","related":["openSUSE-SU-2026:21483-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-200","CWE-306"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42283.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42283.json"},{"type":"ADVISORY","url":"https://github.com/devspace-sh/devspace/security/advisories/GHSA-hqwm-7x7x-8379"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42283"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/devspace-sh/devspace","events":[{"introduced":"a91772ba91f0b8c8cac08e83580a8202dfe00746"},{"fixed":"7f272dcf90653fa9b42bc4347f7f3f9a52b0e8b5"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"6.3.21"},{"introduced":"6.3.20"},{"last_affected":"6.3.20"}],"source":["AFFECTED_FIELD","CPE_STRING"],"cpe":"cpe:2.3:a:devspace:devspace:6.3.20:*:*:*:*:*:*:*"}}],"versions":["6.3.20","v6.3.20","v6.3.19"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42283.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H"}]}