CVE-2021-32862 nbconvert vulnerable to cross-site scripting (XSS) via multiple exploit paths

2022-08-1800:00:00

CWE-79

GitHub_M

www.cve.org

cve-2021-32862

nbconvert

xss

html

web server

nbviewer

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.001

Percentile

25.0%

JSON

The GitHub Security Lab discovered sixteen ways to exploit a cross-site scripting vulnerability in nbconvert. When using nbconvert to generate an HTML version of a user-controllable notebook, it is possible to inject arbitrary HTML which may lead to cross-site scripting (XSS) vulnerabilities if these HTML notebooks are served by a web server (eg: nbviewer).

CNA Affected

[
  {
    "vendor": "jupyter",
    "product": "nbconvert",
    "versions": [
      {
        "version": "<= 6.2",
        "status": "affected"
      }
    ]
  }
]