{"id":"CVE-2026-102831","revision":null,"records":[{"revision":"f2f72876d82a4156874a7e370a106d99","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-102831","aliases":[],"title":"JupyterLab: Cross-site scripting (XSS) in JupyterLab via notebook cells pasted from the system clipboard","description":"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.","state":0,"publishedAt":"2026-09-29T18:58:03.634+00:00","modifiedAt":"2026-10-02T12:22:58.664+00:00","affected":[{"ecosystem":"Vendor product","name":"jupyterlab","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"jupyterlab\",\n                    \"product\": \"jupyterlab\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 4.5.0, < 4.5.11\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 4.6.0, < 4.6.4\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"notebook","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"jupyterlab\",\n                    \"product\": \"notebook\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 7.5.0, < 7.6.3\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"jupyterlite-core","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"jupyterlab\",\n                    \"product\": \"jupyterlite-core\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 0.7.0, < 0.8.4\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","score":8.1,"severity":"HIGH"}],"references":["https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-6966-vjj6-99xv","https://github.com/jupyterlab/jupyterlab/commit/1a10a7da5ff655849b21581c2633b46483ae0be9","https://github.com/jupyterlab/jupyterlab/commit/7f9f29e29e0c83fb17b0f11da57d06b3c6a40d96","https://github.com/jupyterlab/jupyterlab/commit/cf6e89a8d315c4134cefa50c220bca296da466a7","https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.11","https://github.com/jupyterlab/jupyterlab/releases/tag/v4.6.4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-102831","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-102831","identifiers":["CVE-2026-102831"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-11T20:58:42.4460032+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-11T20:58:42.4460032+00:00","lastSuccessAt":"2026-11-11T20:58:42.6009016+00:00","error":null,"lastVerifiedAt":"2026-11-11T20:58:42.6009024+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-de3b77103708811b6494d2ff7c979037d73ae579742cd1649a5c765137ae5083-bc2564cf749a574ebe6216cd53b2772c98ccf01e107d9e465c7cb9637c59db40","complete":true,"records":424281,"lastAttemptAt":"2026-11-11T20:56:40.1262638+00:00","lastSuccessAt":"2026-11-11T19:56:47.8167322+00:00","error":null,"lastVerifiedAt":"2026-11-11T20:56:40.1262638+00:00","snapshotPublishedAt":"2026-11-11T19:18:45+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-cb521aad54b2458dab964661272276f4","complete":false,"records":13759,"lastAttemptAt":"2026-11-11T21:00:01.9870758+00:00","lastSuccessAt":"2026-11-11T21:00:02.1361903+00:00","error":null,"lastVerifiedAt":"2026-11-11T21:00:02.1361903+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-11T20:58:42.4460032+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-11T20:58:42.4460032+00:00","lastSuccessAt":"2026-11-11T20:58:42.6018487+00:00","error":null,"lastVerifiedAt":"2026-11-11T20:58:42.6018491+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-f58072f00ed84b8dbc554f4a4e66e21a","complete":true,"records":13753,"lastAttemptAt":"2026-11-11T20:59:01.4643428+00:00","lastSuccessAt":"2026-11-11T20:59:01.459+00:00","error":null,"lastVerifiedAt":"2026-11-11T20:59:01.459+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13813,"expectedIdentifiers":13813,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-3562b6c78fd1bd0f0b55daf66a0926ae24f65e462df7f6d928caad458fc696bf","complete":true,"records":9947,"lastAttemptAt":"2026-11-11T20:58:42.3041045+00:00","lastSuccessAt":"2026-11-11T04:27:43.6877707+00:00","error":null,"lastVerifiedAt":"2026-11-11T20:58:42.3041045+00:00","snapshotPublishedAt":"2026-11-11T03:32:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-456002455e0ab94bb92c95476d4e6d175c104cd594749982afd96c893728ecbc","complete":true,"records":2010,"lastAttemptAt":"2026-11-11T20:56:40.2809572+00:00","lastSuccessAt":"2026-11-11T02:36:58.1276999+00:00","error":null,"lastVerifiedAt":"2026-11-11T20:56:40.2809572+00:00","snapshotPublishedAt":"2026-11-11T01:17:51+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-baa8362b4daf9e5f39d5563775a55935e7b442c0735d33274a921579ce4a0d66","complete":true,"records":3093,"lastAttemptAt":"2026-11-11T20:58:42.411286+00:00","lastSuccessAt":"2026-11-11T13:00:02.5446881+00:00","error":null,"lastVerifiedAt":"2026-11-11T20:58:42.411286+00:00","snapshotPublishedAt":"2026-11-11T12:47:47+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-757d3692f9a7b34792dad960197f3cc953a54db59b7d0ffe3835a0ed9926f76b","complete":true,"records":231690,"lastAttemptAt":"2026-11-11T20:58:42.1683586+00:00","lastSuccessAt":"2026-11-11T20:58:40.6131056+00:00","error":null,"lastVerifiedAt":"2026-11-11T20:58:42.1683586+00:00","snapshotPublishedAt":"2026-11-11T20:03:03+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}