JupyterGHSA-4952-p58q-6crx
JupyterLab: XSS due to lack of sanitization of the action attribute of an html <form>
Medium7.4CVE-2021-32797 · Published Aug 23, 2021 · updated Jul 8, 2026
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| jupyterlab PyPI | < 1.2.21 | 1.2.21 |
| >= 2.0.0a0, < 2.2.10 | 2.2.10 | |
| >= 2.3.0a0, < 2.3.2 | 2.3.2 | |
| >= 3.0.0a0, < 3.0.17 | 3.0.17 | |
| >= 3.1.0a0, < 3.1.4 | 3.1.4 | |
| notebook PyPI | < 5.7.11 | 5.7.11 |
| >= 6.0.0, < 6.4.1 | 6.4.1 |
Details and references
### Impact Untrusted notebook can execute code on load. This is a remote code execution, but requires user action to open a notebook. ### Patches Patched in the following versions: 3.1.4, 3.0.17, 2.3.2, 2.2.10, 1.2.21. ### References [OWASP Page on Restricting Form Submissions](https://cheatsheetseries.owasp.org/cheatsheets/Content_Security_Policy_Cheat_Sheet.html) ### For more information If you have any questions or comments about this advisory, or vulnerabilities to report, please email our security list security@ipython.org. Credit: Guillaume Jeanne from Google
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-75, CWE-79, CWE-87
- Also known as
- BIT-jupyterlab-2021-32797, CVE-2021-32797, PYSEC-2021-130, PYSEC-2026-688
- github.com/google/security-research/security/advisories/GHSA-c469-p3jp-2vhx
- github.com/jupyterlab/jupyterlab/security/advisories/GHSA-4952-p58q-6crx
- nvd.nist.gov/vuln/detail/CVE-2021-32797
- github.com/jupyterlab/jupyterlab/commit/504825938c0abfa2fb8ff8d529308830a5ae42ed
- github.com/pypa/advisory-database/tree/main/vulns/jupyterlab/PYSEC-2021-130.yaml
More Jupyter advisories
All Jupyter| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 232021 | Special Element Injection in notebook CVE-2021-32798High10.0fixed in 5.7.11, 6.4.1 | High10.0 | 5.7.11, 6.4.1 |
| Nov 82021 | incomplete JupyterHub logout with simultaneous JupyterLab sessions CVE-2021-41247Medium3.5fixed in 1.5.0 | Medium3.5 | 1.5.0 |
| Mar 252022 | Insertion of Sensitive Information into Log File in Jupyter notebook CVE-2022-24757High7.5fixed in 1.15.4 | High7.5 | 1.15.4 |
| Apr 52022 | Sensitive Auth & Cookie data stored in Jupyter server logs CVE-2022-24758High7.5fixed in 6.4.10 | High7.5 | 6.4.10 |
| Dec 212020 | Jupyter Server open redirect vulnerability CVE-2020-26275Medium6.1fixed in 1.1.1 | Medium6.1 | 1.1.1 |
| May 142022 | Improper Neutralization of Input During Web Page Generation in Jupyter Notebook CVE-2019-9644Medium5.4fixed in 5.7.6 | Medium5.4 | 5.7.6 |