CVE-2026-86049
HighAdvisory
Published 17 Sept 2026In the index since 18 Sept 2026
- Severity
- High
- worst across findings
- CVSS
- 7.1
- base score, highest
- EPSS
- 0.004
- 34th percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 7
- of 18,026 indexed, latest versions
- Container images
- 7
- deployed by those charts
- Fix available
- 1 of 1
- affected package
Jupyter Server: 5xx request logging leaks token-bearing Referer header values
Carried by container images the latest versions of 7 of 18,026 indexed charts deploy, on 7 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| jupyter-serverpypi | 2.0.4, 2.7.0, 2.12.4, 2.14.2+2 more | 2.21.0 | 7 |
- OSV records
- GHSA-c3mw-737p-c7g2
- Also known as
- PYSEC-2026-4054
Charts affected
7 by stars
| Chart | Latest | Affected images | Radar Score |
|---|---|---|---|
| daskdask | 2024.1.1 | 1 of 2See more | 14,183 |
| daskhubdask | 2024.1.1 | 1 of 9See more | 17,045 |
| eoapieoapiOfficialVerified publisher | 0.16.4 | 1 of 7See more | 4,497 |
| jupyterhub-outpostjupyter-jscVerified publisher | 2.4.1 | 1 of 1See more | 1,925 |
| jupyterhubd4nVerified publisher | 3.3.7 | 1 of 7See more | 19,384 |
| jupyterhubkubeblocksVerified publisher | 0.1.0 | 1 of 7See more | 9,490 |
| kyso-nbdimekyso | 1.0.0 | 1 of 1See more | 2,994 |
Container images carrying it
7 by charts deploying them
A fixed version is listed for 1 of the 1 affected package.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| aristidetm/ | 469dbc951224 | jupyter-server | 2.21.0 | 1 |
| jupyterhub/ | 8e4778efec8e | jupyter-server | 2.21.0 | 1 |
| jupyterjsc/ | aea53b13f235 | jupyter-server | 2.21.0 | 1 |
| kyso/ | 4aa9d38ee81d | jupyter-server | 2.21.0 | 1 |
| pangeo/ | 5fbe688a4f80 | jupyter-server | 2.21.0 | 1 |
| ghcr.io/ | f53bde3acd4f | jupyter-server | 2.21.0 | 1 |
| ghcr.io/ | 672faad776b5 | jupyter-server | 2.21.0 | 1 |