CVE catalog
CVE-2026-102831
JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.5.0 until 4.5.11 and 4.6.4, from Notebook 7.5.0 until
- Severity
- High · CVSS 8.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.19% · Oct 25, 2026
JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.5.0 until 4.5.11 and 4.6.4, from Notebook 7.5.0 until 7.6.3, and from JupyterLite Core 0.7.0 until 0.8.4, the system clipboard cell-paste path accepts attacker-controlled cell JSON without clearing metadata.trusted. When useSystemClipboardForCells is active and pasteCodeCellsWithoutOutput is disabled, a pasted code cell can mark HTML output as trusted, bypass output sanitization, and execute script in the authenticated JupyterLab origin without executing the cell. Markdown and raw cells are not affected because their output is sanitized. This issue is fixed in JupyterLab 4.5.11 and 4.6.4, Notebook 7.6.3, and JupyterLite Core 0.8.4.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | jupyter-notebook | sid | 7.4.7-3 | vulnerable |
| Debian | jupyter-notebook | forky | 7.4.7-3 | vulnerable |
| Debian | jupyter-notebook | trixie | 6.4.13-5 | vulnerable |
| Debian | jupyter-notebook | bookworm | 6.4.12-2.2 | vulnerable |
| PyPI | jupyterlab | Not reported | 4.6.4 | fixed |
| PyPI | jupyterlab | Not reported | 4.5.11 | fixed |
| PyPI | notebook | Not reported | 7.6.3 | fixed |
| Pip | jupyterlab | Not reported | 4.5.11 | fixed |
| Pip | notebook | Not reported | 7.6.3 | fixed |
| Pip | jupyterlite | Not reported | 0.8.4 | fixed |
| Pip | jupyterlite-core | Not reported | 0.8.4 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | jupyter-notebook | source | sid | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | jupyter-notebook | source | forky | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | jupyter-notebook | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | jupyter-notebook | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| PyPI | jupyterlab | PyPI | Not reported | 4.6.4 | Not reported | PYSEC-2026-4057 | Not reported |
| PyPI | jupyterlab | PyPI | Not reported | 4.5.11 | Not reported | PYSEC-2026-4057 | Not reported |
| PyPI | notebook | PyPI | Not reported | 7.6.3 | Not reported | PYSEC-2026-4112 | Not reported |
| Pip | jupyterlab | pip | Not reported | 4.5.11 | Not reported | GHSA-6966-VJJ6-99XV | Not reported |
| Pip | notebook | pip | Not reported | 7.6.3 | Not reported | GHSA-6966-VJJ6-99XV | Not reported |
| Pip | jupyterlite | pip | Not reported | 0.8.4 | Not reported | GHSA-6966-VJJ6-99XV | Not reported |
| Pip | jupyterlite-core | pip | Not reported | 0.8.4 | Not reported | GHSA-6966-VJJ6-99XV | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [jupyter-notebook]Affected
Details (2)
6.4.12-2.2· all · bookwormAffected
nvd · jupyter-notebook · debian · bookworm; nvd · jupyter-notebook · debian · 12
6.4.12-2.2· all · bookwormAffected
nvd · jupyter-notebook · debian · bookworm; nvd · jupyter-notebook · debian · 12
- [python3-notebook]Affected
Source package: [jupyter-notebook]
Details (2)
6.4.12-2.2· all · bookwormAffected
nvd · jupyter-notebook · debian · bookworm; nvd · jupyter-notebook · debian · 12
6.4.12-2.2· all · bookwormAffected
nvd · jupyter-notebook · debian · bookworm; nvd · jupyter-notebook · debian · 12
- [python-notebook-doc]Affected
Source package: [jupyter-notebook]
Details (2)
6.4.12-2.2· all · bookwormAffected
nvd · jupyter-notebook · debian · bookworm; nvd · jupyter-notebook · debian · 12
6.4.12-2.2· all · bookwormAffected
nvd · jupyter-notebook · debian · bookworm; nvd · jupyter-notebook · debian · 12
[Debian 13 (Trixie)]
- [jupyter-notebook]Affected
Details (2)
6.4.13-5· all · trixieAffected
nvd · jupyter-notebook · debian · 13
6.4.13-5· all · trixieAffected
nvd · jupyter-notebook · debian · 13
- [python3-notebook]Affected
Source package: [jupyter-notebook]
Details (2)
6.4.13-5· all · trixieAffected
nvd · jupyter-notebook · debian · 13
6.4.13-5· all · trixieAffected
nvd · jupyter-notebook · debian · 13
- [python-notebook-doc]Affected
Source package: [jupyter-notebook]
Details (2)
6.4.13-5· all · trixieAffected
nvd · jupyter-notebook · debian · 13
6.4.13-5· all · trixieAffected
nvd · jupyter-notebook · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11945-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-102831]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-102831]
- [https://osv.dev/vulnerability/PYSEC-2026-4112]
- [https://security-tracker.debian.org/tracker/CVE-2026-102831]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102831.json]
[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]