CVE-2026-42266
HighAdvisory
Published 5 May 2026In the index since 6 Sept 2026
- Severity
- High
- worst across findings
- CVSS
- 8.8
- base score, highest
- EPSS
- 0.006
- 48th percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 3
- of 17,781 indexed, latest versions
- Container images
- 3
- deployed by those charts
- Fix available
- 1 of 1
- affected package
JupyterLab has an Extension Manager API/GUI Policy Discrepancy, allowing 3rd party (malicious) extensions install via POST request
Carried by container images the latest versions of 3 of 17,781 indexed charts deploy, on 3 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| jupyterlabpypi | 4.0.4, 4.0.10 | 4.5.7 | 3 |
- OSV records
- GHSA-37w4-hwhx-4rc4
- Also known as
- BIT-jupyterlab-2026-42266, PYSEC-2026-164
Charts affected
3 by stars
Container images carrying it
3 by charts deploying them
A fixed version is listed for 1 of the 1 affected package.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| jupyterhub/ | 8e4778efec8e | jupyterlab | 4.5.7 | 1 |
| pangeo/ | 5fbe688a4f80 | jupyterlab | 4.5.7 | 1 |
| ghcr.io/ | f53bde3acd4f | jupyterlab | 4.5.7 | 1 |