{"id":"CVE-2026-111058","summary":"Mercury: Unauthenticated Remote Code Execution via /api/kernels","details":"Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. Prior to 3.2.6, default tokenless deployments allow anonymous clients to create Jupyter kernels and send execute_request messages containing arbitrary Python. The endpoint blocklist does not cover /api/kernels, and the websocket wrapper previously tracked idle activity without authorizing executable messages. This issue is fixed in version 3.2.6.","aliases":["GHSA-rv4m-xm3f-3ccq"],"modified":"2026-10-20T02:44:16.215890198Z","published":"2026-10-19T16:06:22.646Z","database_specific":{"cwe_ids":["CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111058.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111058.json"},{"type":"FIX","url":"https://github.com/mljar/mercury/commit/73a40ceb0becf057f495a5738ad7f5a5222a53e1"},{"type":"WEB","url":"https://github.com/mljar/mercury/releases/tag/3.2.6"},{"type":"ADVISORY","url":"https://github.com/mljar/mercury/security/advisories/GHSA-rv4m-xm3f-3ccq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111058"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mljar/mercury","events":[{"introduced":"0"},{"fixed":"342cc04d692487ae6fa2683353cb30d8961e8334"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"3.2.6"}],"source":"AFFECTED_FIELD"}}],"versions":["v3.2.3","v3.2.2","v3.2.1","v3.2.0","v3.1.2","v3.1.1","v3.1.0","v3.0.1","v3.0.0","v2.4.3","v2.4.2","v2.4.1","v2.3.10","v2.3.9","v2.3.8","v2.3.6","v2.3.5","v2.3.7","v2.3.1","v2.3.0","v2.2.9","v2.2.8","v2.2.7","v2.2.6","v2.2.1","v2.2.0","v2.1.2","v2.1.1","v2.1.0","v2.0.12","v2.0.10","v2.0.9","v2.0.8","v2.0.7","v2.0.4","v2.0.0","v1.1.6","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.1","v1.0.0","v0.8.6","v0.8.0","v0.7.0","v0.6.10","v0.6.8","v0.6.0","v0.5.1","v0.4.1","v0.4.0","v0.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111058.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}