Medium severity · published Aug 18, 2022
CVE-2021-32862
The GitHub Security Lab discovered sixteen ways to exploit a cross-site scripting vulnerability in nbconvert
5.4
CVSS
1.5%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
NB
Nbconvert · Jupyter
through 6.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-32862
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-32862
Exploit
https://github.com/jupyter/nbconvert/security/advisories/GHSA-9jmq-rx5f-8jwq
Broken Link
https://github.com/jupyter/nbviewer/security/advisories/GHSA-h274-fcvj-h2wm
Mailing List
https://lists.debian.org/debian-lts-announce/2023/06/msg00003.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/09/msg00004.html
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