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CVE-2021-32862

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Date: August 18, 2022

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).

Language: Python

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2021-32862
https://github.com/advisories/GHSA-9jmq-rx5f-8jwq
https://github.com/jupyter/nbconvert/security/advisories/GHSA-9jmq-rx5f-8jwq
https://lists.debian.org/debian-lts-announce/2023/06/msg00003.html
https://github.com/jupyter/nbviewer/security/advisories/GHSA-h274-fcvj-h2wm
https://www.mend.io/vulnerability-database/CVE-2021-32862

Severity Score

Weakness Type (CWE)

Cross-Site Scripting (XSS)

CWE-79

Top Fix

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Upgrade Version

Upgrade to version nbconvert - 6.3.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

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