CVE-2026-111059
mediumMercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards.
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
6.1
6.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (security-advisories@github.com)
Timeline (UTC)
Published: 2026-10-19 17:17
Modified: 2026-10-20 17:17
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-10-27 07:04 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/mljar/mercury/commit/c798a85924e6614c6fea7afe5a560e4554a1d09b security-advisories@github.com
- https://github.com/mljar/mercury/releases/tag/v3.2.11 security-advisories@github.com
- https://github.com/mljar/mercury/security/advisories/GHSA-2658-85cv-9wwq security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:04 UTC · record ↗