CVSS 3.1
9.6 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HCVE-2021-32798
Critical (9.6) in jupyter notebook. EPSS 2.1% chance of exploitation in the next 30 days. Fixed in notebook 5.7.11, 6.4.1.
The Jupyter notebook is a web-based notebook environment for interactive computing. In affected versions untrusted notebook can execute code on load. Jupyter Notebook uses a deprecated version of Google Caja to sanitize user inputs. A public Caja bypass can be used to trigger an XSS when a victim opens a malicious ipynb document in Jupyter Notebook. The XSS allows an attacker to execute arbitrary code on the victim computer using Jupyter APIs.
Severity
- EPSS
- 2.1% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- jupyter:notebook
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-hwvq-6gjx-j797 | PyPI | notebook | <5.7.11 | 5.7.11 |
| GHSA-hwvq-6gjx-j797 | PyPI | notebook | >=6.0.0 <6.4.1 | 6.4.1 |
| PYSEC-2021-118 | PyPI | notebook | >=5.7.0 <5.7.11 | 5.7.11 |
References
- https://github.com/jupyter/notebook/commit/79fc76e890a8ec42f73a3d009e44ef84c14ef0d5
- https://github.com/jupyter/notebook/security/advisories/GHSA-hwvq-6gjx-j797
- https://github.com/jupyter/notebook/commit/79fc76e890a8ec42f73a3d009e44ef84c14ef0d5
- https://github.com/jupyter/notebook/security/advisories/GHSA-hwvq-6gjx-j797