CVE-2019-9644
mediumpriority · track · 23EPSS 0.015 · 75 %ileEUUSEPSS · scored 2026-10-27
An XSSI (cross-site inclusion) vulnerability in Jupyter Notebook before 5.7.6 allows inclusion of resources on malicious pages when visited by users who are authenticated with a Jupyter server. Access to the content of resources has been demonstrated with Internet Explorer through capturing of error messages, though not reproduced with other browsers. This occurs because Internet Explorer's error messages can include the content of any invalid JavaScript that was encountered.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- GHSA-hhx8-cr55-qcxxImproper Neutralization of Input During Web Page Generation in Jupyter Notebook2022-05-14ghsa · osvUS
An XSSI (cross-site inclusion) vulnerability in Jupyter Notebook before 5.7.6 allows inclusion of resources on malicious pages when visited by users who are authenticated with a Jupyter server. Access to the content of resources has been demonstrated with Internet Explorer through capturing of error messages, though not reproduced with other browsers. This occurs because Internet Explorer's error messages can include the content of any invalid JavaScript that was encountered.
- PYSEC-2019-1592019-03-12vendor · osvUS
An XSSI (cross-site inclusion) vulnerability in Jupyter Notebook before 5.7.6 allows inclusion of resources on malicious pages when visited by users who are authenticated with a Jupyter server. Access to the content of resources has been demonstrated with Internet Explorer through capturing of error messages, though not reproduced with other browsers. This occurs because Internet Explorer's error messages can include the content of any invalid JavaScript that was encountered.
- PYSEC-2026-2531Improper Neutralization of Input During Web Page Generation in Jupyter Notebook2026-07-09vendor · osvUS
An XSSI (cross-site inclusion) vulnerability in Jupyter Notebook before 5.7.6 allows inclusion of resources on malicious pages when visited by users who are authenticated with a Jupyter server. Access to the content of resources has been demonstrated with Internet Explorer through capturing of error messages, though not reproduced with other browsers. This occurs because Internet Explorer's error messages can include the content of any invalid JavaScript that was encountered.
also known as (8)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (13)
External citations — patches, advisories, analysis.
- https://blog.jupyter.org/jupyter-notebook-xssi-security-fix-546cd95babb0Patchcnnvd
- https://github.com/jupyter/notebook/compare/f3f00df...05aa4b2cnnvd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UP5RLEES2JBBNSNLBR65XM6PCD4EMF7D/cnnvd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VMDPJBVXOVO6LYGAT46VZNHH6JKSCURO/cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-9644cnnvd
- https://vigilance.fr/vulnerability/Jupyter-Notebook-information-disclosure-via-Cross-site-Site-Inclusion-28708cnnvd
- https://www.auscert.org.au/bulletins/ESB-2022.4276cnnvd
- https://github.com/jupyter/notebook/compare/f3f00df...05aa4b2enisa_euvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan