{"id":"CVE-2026-102831","title":"JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture","summary":"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.…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","cwe":["CWE-79","CWE-345"],"vendor":"jupyterlab","product":"jupyterlab","affected":["jupyterlab >= 4.5.0, < 4.5.11","jupyterlab >= 4.6.0, < 4.6.4","notebook >= 7.5.0, < 7.6.3","jupyterlite-core >= 0.7.0, < 0.8.4"],"patched":["jupyterlab 4.6.4","jupyterlab 4.5.11","notebook 7.6.3","jupyterlite 0.8.4","jupyterlite-core 0.8.4"],"published":"2026-09-29","updated":"2026-10-02","sourceUpdated":"2026-10-02T13:17:27.660","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102831","references":[{"url":"https://github.com/jupyterlab/jupyterlab/commit/1a10a7da5ff655849b21581c2633b46483ae0be9","label":"security-advisories@github.com"},{"url":"https://github.com/jupyterlab/jupyterlab/commit/7f9f29e29e0c83fb17b0f11da57d06b3c6a40d96","label":"security-advisories@github.com"},{"url":"https://github.com/jupyterlab/jupyterlab/commit/cf6e89a8d315c4134cefa50c220bca296da466a7","label":"security-advisories@github.com"},{"url":"https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.11","label":"security-advisories@github.com"},{"url":"https://github.com/jupyterlab/jupyterlab/releases/tag/v4.6.4","label":"security-advisories@github.com"},{"url":"https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-6966-vjj6-99xv","label":"security-advisories@github.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102831.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-102831"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543518"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-102831"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102831"},{"url":"https://github.com/advisories/GHSA-6966-vjj6-99xv"},{"url":"https://github.com/jupyterlab/jupyterlab"},{"url":"https://pypi.org/project/jupyterlab"},{"url":"https://pypi.org/project/jupyterlite"},{"url":"https://pypi.org/project/jupyterlite-core"},{"url":"https://pypi.org/project/notebook"},{"url":"https://access.redhat.com/errata/RHSA-2026:84734"}],"tags":["nvd","cve.org","csaf","vex","red-hat","ghsa","pip","osv"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-02T12:22:47.366494Z"},"epss":0.00193,"epssPercentile":0.08925,"aliases":["GHSA-6966-vjj6-99xv","PYSEC-2026-4057","PYSEC-2026-4058","PYSEC-2026-4060","PYSEC-2026-4112"],"ecosystem":"pip","ingestedAt":"2026-09-29T19:44:04.150Z","slug":"CVE-2026-102831","body":"## Overview\n\nJupyterLab 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-102831)\n\nAffected packages:\n\n- `jupyterlab >= 4.6.0, <= 4.6.3`\n- `jupyterlab >= 4.5.0, <= 4.5.10`\n- `notebook >= 7.5.0, <= 7.6.2`\n- `jupyterlite >= 0.7.0, <= 0.8.3`\n- `jupyterlite-core >= 0.7.0, <= 0.8.3`\n\nPatched in:\n\n- `jupyterlab 4.6.4`\n- `jupyterlab 4.5.11`\n- `notebook 7.6.3`\n- `jupyterlite 0.8.4`\n- `jupyterlite-core 0.8.4`\n\nSource: https://github.com/advisories/GHSA-6966-vjj6-99xv\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat OpenShift AI (RHOAI) · no fix planned: Red Hat OpenShift AI (RHOAI) · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102831.json)\n- **RHSA-2026:84734** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84734)","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}