CVE-2026-44727
2 advisories.
PyPI/jupyter-server CVE-2026-44727: medium 5.4
Jupyter Server: Stored XSS in `NbconvertFileHandler` / `NbconvertPostHandler` via missing `sandbox` CSP
Action: Upgrade jupyter-server to 2.20.0 or later.
pip install jupyter-server==2.20.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 2.20.0 | - |
Fixed versions
| 2.20.0 |
Sources
- osv: GHSA-fcw5-x6j4-ccmp
- https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-fcw5-x6j4-ccmp
- https://nvd.nist.gov/vuln/detail/CVE-2026-44727
- https://github.com/jupyter-server/jupyter_server/commit/6cbee8d65e71abac851c4492fea987ad080580bd
- https://access.redhat.com/errata/RHSA-2026:43038
- https://access.redhat.com/errata/RHSA-2026:60520
- https://access.redhat.com/security/cve/CVE-2026-44727
- https://bugzilla.redhat.com/show_bug.cgi?id=2491516
- https://github.com/advisories/GHSA-fcw5-x6j4-ccmp
- https://github.com/jupyter-server/jupyter_server
- https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server/PYSEC-2026-366.yaml
- https://pypi.org/project/jupyter-server
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44727.json
CVE-2026-44727 · published · modified · JSON
PyPI/jupyter-server CVE-2026-44727: unknown
Jupyter Server: Stored XSS in `NbconvertFileHandler` / `NbconvertPostHandler` via missing `sandbox` CSP
Action: Upgrade jupyter-server to 2.20.0 or later.
pip install jupyter-server==2.20.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 2.20.0 | - |
Fixed versions
| 2.20.0 |
Sources
- osv: PYSEC-2026-366
- https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-fcw5-x6j4-ccmp
- https://github.com/jupyter-server/jupyter_server/commit/6cbee8d65e71abac851c4492fea987ad080580bd
- https://github.com/jupyter-server/jupyter_server
- https://pypi.org/project/jupyter-server
- https://github.com/advisories/GHSA-fcw5-x6j4-ccmp
- https://nvd.nist.gov/vuln/detail/CVE-2026-44727
CVE-2026-44727 · published · modified · JSON