CVE-2026-6658

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CVSS 3.0

5.4 medium

EPSS

<1%p13

Published

Jun 26, 2026 (Jun 26, 2026)

Modified

Jun 26, 2026

Description

A vulnerability in jupyter/nbconvert versions ` tag. This vulnerability impacts any server using nbconvert to render notebooks as HTML, allowing attackers to execute arbitrary JavaScript in the context of users viewing the HTML export.

Weakness: CWE-79
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.2%)

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