{"cve":"CVE-2026-111059","nvd":{"published":"2026-10-19T17:17:02.940","modified":"2026-10-20T17:17:29.197","status":"Awaiting Analysis","description":"Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. From 3.0.0 until 3.2.11, mr.Markdown converts attacker-controlled Markdown to HTML without sanitizing raw HTML before assigning it to an ipywidgets.HTML sink. Event-handler attributes and other active HTML can therefore reach the DOM and execute when another user views the application. This issue is fixed in version 3.2.11.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79","CWE-116"],"references":["https://github.com/mljar/mercury/commit/c798a85924e6614c6fea7afe5a560e4554a1d09b","https://github.com/mljar/mercury/releases/tag/v3.2.11","https://github.com/mljar/mercury/security/advisories/GHSA-2658-85cv-9wwq"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:56:58.798400159+00:00"},"epss":{"cve":"CVE-2026-111059","score":0.00284,"percentile":0.20686,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-2658-85cv-9wwq","url":"https://osv.dev/vulnerability/GHSA-2658-85cv-9wwq","summary":"Mercury: Stored / DOM Cross-Site Scripting (XSS): mr.Markdown renders untrusted content as raw, unsanitized HTML","modified":"2026-10-19T17:15:04.101718667Z","packages":[{"ecosystem":"PyPI","name":"mercury","purl":"pkg:pypi/mercury","ranges":[">=3.0.0 <3.2.11"],"fixed":["3.2.11"]}]}],"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."]}