{"cve":"CVE-2026-111058","nvd":{"published":"2026-10-19T16:17:03.957","modified":"2026-10-19T21:13:39.973","status":"Awaiting Analysis","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-862"],"references":["https://github.com/mljar/mercury/commit/73a40ceb0becf057f495a5738ad7f5a5222a53e1","https://github.com/mljar/mercury/releases/tag/3.2.6","https://github.com/mljar/mercury/security/advisories/GHSA-rv4m-xm3f-3ccq"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:56:58.798400159+00:00"},"epss":{"cve":"CVE-2026-111058","score":0.00523,"percentile":0.44085,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-rv4m-xm3f-3ccq","url":"https://osv.dev/vulnerability/GHSA-rv4m-xm3f-3ccq","summary":"Mercury: Unauthenticated Remote Code Execution via /api/kernels","modified":"2026-10-19T17:00:04.132793757Z","packages":[{"ecosystem":"PyPI","name":"mercury","purl":"pkg:pypi/mercury","ranges":["<3.2.6"],"fixed":["3.2.6"]}]}],"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."]}