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CVE-2019-9644

Improper Neutralization of Input During Web Page Generation in Jupyter Notebook

5.4 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

1.53%Up 0.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.4

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.

Record
CVE-2019-9644
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness
CWE-79
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2019-9644
Updated
2026-11-02
EUVDEUVD-2019-0095 No score

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.

Record
EUVD-2019-0095
Updated
2026-11-03
GitHub AdvisoriesGHSA-hhx8-cr55-qcxx 5.1

Improper Neutralization of Input During Web Page Generation in Jupyter Notebook

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.

Record
GHSA-hhx8-cr55-qcxx
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 5.4

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.

Record
CVE-2019-9644
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2019-9644 5.4

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.

Record
DEBIAN-CVE-2019-9644
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02
Show 6 moreShow less
OSVGHSA-hhx8-cr55-qcxx 5.1

Improper Neutralization of Input During Web Page Generation in Jupyter Notebook

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.

Record
GHSA-hhx8-cr55-qcxx
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVPYSEC-2026-2531 5.1

Improper Neutralization of Input During Web Page Generation in Jupyter Notebook

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.

Record
PYSEC-2026-2531
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2019-9644 5.4

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.

Record
UBUNTU-CVE-2019-9644
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02
OSVMGASA-2022-0323 No score

Updated jupyter-notebook packages fix security vulnerability

It was discovered that Jupyter Notebook incorrectly handled certain notebooks. An attacker could possibly use this issue of lack of Content Security Policy in Nbconvert to perform cross-site scripting (XSS) attacks on the notebook server. (CVE-2018-19351)

It was discovered that Jupyter Notebook incorrectly handled certain SVG documents. An attacker could possibly use this issue to perform cross-site scripting (XSS) attacks. (CVE-2018-21030)

It was discovered that Jupyter Notebook incorrectly filtered certain URLs on the login page. An attacker could possibly use this issue to perform open-redirect attack. (CVE-2019-10255)

It was discovered that Jupyter Notebook had an incomplete fix for CVE-2019-10255. An attacker could possibly use this issue to perform open-redirect attack using empty netloc. (CVE-2019-10856)

It was discovered that Jupyter Notebook incorrectly handled the inclusion of remote pages on Jupyter server. An attacker could possibly use this issue to perform cross-site script inclusion (XSSI) attacks. (CVE-2019-9644)

It was discovered that Jupyter Notebook incorrectly filtered certain URLs to a notebook. An attacker could possibly use this issue to perform open-redirect attack. (CVE-2020-26215)

It was discovered that Jupyter Notebook server access logs were not protected. An attacker having access to the notebook server could possibly use this issue to get access to steal sensitive information such as auth/cookies. (CVE-2022-24758)

It was discovered that Jupyter Notebook incorrectly configured hidden files on the server. An authenticated attacker could possibly use this issue to see unwanted sensitive hidden files from the server which may result in getting full access to the server. (CVE-2022-29238)

Moment.js: Path traversal in moment.locale (CVE-2022-24785)

moment: inefficient parsing algorithim resulting in DoS (CVE-2022-31129)

Record
MGASA-2022-0323
Updated
2026-11-02
OSVPYSEC-2019-159 No score

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.

Record
PYSEC-2019-159
Updated
2026-11-02
OSVUSN-5585-1 No score

jupyter-notebook vulnerabilities

It was discovered that Jupyter Notebook incorrectly handled certain notebooks. An attacker could possibly use this issue of lack of Content Security Policy in Nbconvert to perform cross-site scripting (XSS) attacks on the notebook server. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-19351)

It was discovered that Jupyter Notebook incorrectly handled certain SVG documents. An attacker could possibly use this issue to perform cross-site scripting (XSS) attacks. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-21030)

It was discovered that Jupyter Notebook incorrectly filtered certain URLs on the login page. An attacker could possibly use this issue to perform open-redirect attack. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-10255)

It was discovered that Jupyter Notebook had an incomplete fix for CVE-2019-10255. An attacker could possibly use this issue to perform open-redirect attack using empty netloc. (CVE-2019-10856)

It was discovered that Jupyter Notebook incorrectly handled the inclusion of remote pages on Jupyter server. An attacker could possibly use this issue to perform cross-site script inclusion (XSSI) attacks. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-9644)

It was discovered that Jupyter Notebook incorrectly filtered certain URLs to a notebook. An attacker could possibly use this issue to perform open-redirect attack. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-26215)

It was discovered that Jupyter Notebook server access logs were not protected. An attacker having access to the notebook server could possibly use this issue to get access to steal sensitive information such as auth/cookies. (CVE-2022-24758)

It was discovered that Jupyter Notebook incorrectly configured hidden files on the server. An authenticated attacker could possibly use this issue to see unwanted sensitive hidden files from the server which may result in getting full access to the server. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-29238)

Record
USN-5585-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
jupyter-notebook
PyPI
through 5.7.5
5.7.6
notebook
PyPI
before 5.7.6
5.7.6
jupyter-notebook
Debian:12
before 5.7.8-1
5.7.8-1
jupyter-notebook
Debian:13
before 5.7.8-1
5.7.8-1
jupyter-notebook
Debian:14
before 5.7.8-1
5.7.8-1
jupyter-notebook
PyPI
before 5.7.6, plus listed versions
4.0.0.dev
5.7.6
notebook
PyPI
before 5.7.6, plus listed versions
0.0.04.0.04.0.14.0.24.0.4
Show 42 moreShow less
4.0.54.0.64.1.04.2.04.2.0b14.2.14.2.24.2.34.3.04.3.14.3.24.4.04.4.15.0.05.0.0b15.0.0b25.0.0rc15.0.0rc25.1.05.1.0rc15.1.0rc25.1.0rc35.2.05.2.0rc15.2.15.2.1rc15.2.25.3.05.3.0rc15.3.15.4.05.4.15.5.05.5.0rc15.6.05.6.0rc15.7.05.7.15.7.25.7.35.7.45.7.5
5.7.6
jupyter-notebook
Mageia:8
From an advisory covering 10 CVEs
before 6.4.12-1.mga8
6.4.12-1.mga8
python-send2trash
Mageia:8
From an advisory covering 10 CVEs
before 1.8.0-1.mga8
1.8.0-1.mga8
python-nest-asyncio
Mageia:8
From an advisory covering 10 CVEs
before 1.5.5-1.mga8
1.5.5-1.mga8
Show 4 moreShow less
Affected packages
PackageAffectedFixed
jupyter-notebook
Ubuntu:18.04:LTS
before 5.2.2-1ubuntu0.1, plus listed versions
4.2.3-45.1.0-25.2.1-25.2.2-1
5.2.2-1ubuntu0.1
jupyter-notebook
Ubuntu:18.04:LTS
From an advisory covering 8 CVEs
before 5.2.2-1ubuntu0.1, plus listed versions
4.2.3-45.1.0-25.2.1-25.2.2-1
5.2.2-1ubuntu0.1
jupyter-notebook
Ubuntu:20.04:LTS
From an advisory covering 8 CVEs
before 6.0.3-2ubuntu0.1, plus listed versions
5.7.8-16.0.0-16.0.0-26.0.2-16.0.3-16.0.3-2
6.0.3-2ubuntu0.1
jupyter-notebook
Ubuntu:22.04:LTS
From an advisory covering 8 CVEs
before 6.4.8-1ubuntu0.1, plus listed versions
6.2.0-16.4.5-26.4.5-36.4.5-46.4.8-1
6.4.8-1ubuntu0.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-9644 is a medium vulnerability (CVSS 5.4) in Jupyter Notebook, published March 12, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.53%, the 74th percentile. Fixed in jupyter-notebook 5.7.6.

References

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