{"id":"CVE-2026-42266","aliases":["BIT-jupyterlab-2026-42266","DEBIAN-CVE-2026-42266","EUVD-2026-29995","GHSA-37w4-hwhx-4rc4","PYSEC-2026-164","UBUNTU-CVE-2026-42266","openSUSE-SU-2026:10748-1"],"status":"published","title":"JupyterLab has an Extension Manager API/GUI Policy Discrepancy allowing 3rd party (malicious) extensions install via POST request.","description":"JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.05652,"percentile":0.93067,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20","CWE-602","CWE-88"],"published":"2026-05-05T20:53:18Z","modified":"2026-10-28T02:31:14Z","fixes":[{"ecosystem":"PyPI","package":"jupyterlab","fixed_in":["4.5.7"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"jupyterlab","fixed_in":["4.5.7"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"jupyterlab","fixed_in":["4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"jupyterlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"last_affected":"4.5.6"},{"fixed":"4.5.7"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"jupyterlab","ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.5.7"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"jupyterlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.11+ds1+~cs11.25.27-7","4.0.11+ds1+~cs11.25.27-8","4.0.11+ds1+~cs11.25.27-9","4.0.11+ds2+~cs11.25.27-1","4.0.11+ds2+~cs11.25.27-3","4.0.11+ds3+~cs11.25.27-1","4.0.11+ds4+~cs11.25.27-1","4.0.11+ds4+~cs11.25.27-2","4.0.11+ds4+~cs11.25.27-3","4.0.11+ds4+~cs11.25.27-4","4.0.11+ds5+~cs11.25.27-1","4.0.13+ds1+~2.0.1+~cs1.4.4-1","4.1.3+ds1+~2.0.1+~0.15.3+~cs1.4.4-1","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-1","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-2","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-3","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-4","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-5","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-6","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-7","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-8","4.4.1+ds1+~3.0.5+~0.16.6+~cs1.4.4-1","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-1","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-2","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-5","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-6","4.4.8+ds1+~3.1.0+~0.16.6+~cs1.4.4-1"]},{"source":"osv","ecosystem":"Debian:14","package":"jupyterlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3"}]}],"versions":["4.0.11+ds1+~cs11.25.27-7","4.0.11+ds1+~cs11.25.27-8","4.0.11+ds1+~cs11.25.27-9","4.0.11+ds2+~cs11.25.27-1","4.0.11+ds2+~cs11.25.27-3","4.0.11+ds3+~cs11.25.27-1","4.0.11+ds4+~cs11.25.27-1","4.0.11+ds4+~cs11.25.27-2","4.0.11+ds4+~cs11.25.27-3","4.0.11+ds4+~cs11.25.27-4","4.0.11+ds5+~cs11.25.27-1","4.0.13+ds1+~2.0.1+~cs1.4.4-1","4.1.3+ds1+~2.0.1+~0.15.3+~cs1.4.4-1","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-1","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-2","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-3","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-4","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-5","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-6","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-7","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-8","4.4.1+ds1+~3.0.5+~0.16.6+~cs1.4.4-1","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-1","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-2","4.4.8+ds1+~3.1.0+~0.16.6+~cs1.4.4-1"]},{"source":"osv","ecosystem":"PyPI","package":"jupyterlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.5.7"}]}],"versions":["4.0.0","4.0.1","4.0.10","4.0.11","4.0.12","4.0.13","4.0.2","4.0.3","4.0.4","4.0.5","4.0.6","4.0.7","4.0.8","4.0.9","4.1.0","4.1.0a1","4.1.0a2","4.1.0a3","4.1.0a4","4.1.0b0","4.1.0b1","4.1.0b2","4.1.0rc0","4.1.0rc1","4.1.1","4.1.2","4.1.3","4.1.4","4.1.5","4.1.6","4.1.7","4.1.8","4.2.0","4.2.0a0","4.2.0a1","4.2.0a2","4.2.0b0","4.2.0b1","4.2.0b2","4.2.0b3","4.2.0rc0","4.2.1","4.2.2","4.2.3","4.2.4","4.2.5","4.2.6","4.2.7","4.3.0","4.3.0a0","4.3.0a1","4.3.0a2","4.3.0b0","4.3.0b1","4.3.0b2","4.3.0b3","4.3.0rc0","4.3.0rc1","4.3.1","4.3.2","4.3.3","4.3.4","4.3.5","4.3.6","4.3.7","4.3.8","4.4.0","4.4.0a0","4.4.0a1","4.4.0a2","4.4.0a3","4.4.0b0","4.4.0b1","4.4.0b2","4.4.0rc0","4.4.0rc1","4.4.1","4.4.10","4.4.2","4.4.3","4.4.4","4.4.5","4.4.6","4.4.7","4.4.8","4.4.9","4.5.0","4.5.0a0","4.5.0a1","4.5.0a2","4.5.0a3","4.5.0a4","4.5.0b0","4.5.0b1","4.5.0rc0","4.5.0rc1","4.5.1","4.5.2","4.5.3","4.5.4","4.5.5","4.5.6"]},{"source":"osv","ecosystem":"PyPI","package":"jupyterlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.5.7"}]}],"versions":["4.0.0","4.0.1","4.0.10","4.0.11","4.0.12","4.0.13","4.0.2","4.0.3","4.0.4","4.0.5","4.0.6","4.0.7","4.0.8","4.0.9","4.1.0","4.1.0a1","4.1.0a2","4.1.0a3","4.1.0a4","4.1.0b0","4.1.0b1","4.1.0b2","4.1.0rc0","4.1.0rc1","4.1.1","4.1.2","4.1.3","4.1.4","4.1.5","4.1.6","4.1.7","4.1.8","4.2.0","4.2.0a0","4.2.0a1","4.2.0a2","4.2.0b0","4.2.0b1","4.2.0b2","4.2.0b3","4.2.0rc0","4.2.1","4.2.2","4.2.3","4.2.4","4.2.5","4.2.6","4.2.7","4.3.0","4.3.0a0","4.3.0a1","4.3.0a2","4.3.0b0","4.3.0b1","4.3.0b2","4.3.0b3","4.3.0rc0","4.3.0rc1","4.3.1","4.3.2","4.3.3","4.3.4","4.3.5","4.3.6","4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hat","product":"red hat migration toolkit for applications 8.2"},{"vendor":"red hat","product":"red hat openshift ai (rhoai)"},{"vendor":"red hat","product":"red hat openshift ai 3.4"}],"references":[{"url":"https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-37w4-hwhx-4rc4","tags":["x_refsource_CONFIRM","Mitigation","Vendor Advisory","advisory","web","report"]},{"url":"https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.7","tags":["x_refsource_MISC","Patch","Release Notes","fix","web"]},{"url":"https://jupyterhub.readthedocs.io/en/5.2.1/explanation/websecurity.html","tags":["x_refsource_MISC","Product","web"]},{"url":"https://jupyterlab.readthedocs.io/en/latest/user/extensions.html#extension-manager-implementations","tags":["x_refsource_MISC","Product","web"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-42266","tags":["vdb-entry","x_refsource_REDHAT","web","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2477072","tags":["issue-tracking","x_refsource_REDHAT","web","report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42266.json","tags":["x_sadp-csaf-vex","web"]},{"url":"https://access.redhat.com/errata/RHSA-2026:43038","tags":["vendor-advisory","x_refsource_REDHAT","web","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:60520","tags":["vendor-advisory","x_refsource_REDHAT","web","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42266","tags":["web","advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/jupyterlab/PYSEC-2026-164.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-37w4-hwhx-4rc4"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42266.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-42266","tags":["advisory"]},{"url":"https://github.com/jupyterlab/jupyterlab","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-42266","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-42266","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-40171","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42266","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-42557","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-42266","title":"JupyterLab has an Extension Manager API/GUI Policy Discrepancy allowing 3rd party (malicious) extensions install via POST request.","description":"JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.","status":"published","published":"2026-05-13T15:08:49.846Z","modified":"2026-08-28T12:04:22.624Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-88","CWE-602","CWE-88"],"updated_at":"2026-11-02T13:40:23.731501Z"}],"euvd":[{"id":"EUVD-2026-29995","description":"JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.","status":"published","published":"2026-05-13T15:08:49Z","modified":"2026-08-28T12:04:22Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:01:23.608347Z"}],"ghsa":[{"id":"GHSA-37w4-hwhx-4rc4","title":"JupyterLab has an Extension Manager API/GUI Policy Discrepancy, allowing 3rd party (malicious) extensions install via POST request","description":"The allow-list of extensions that can be installed from PyPI Extension Manager (`allowed_extensions_uris`) is not correctly enforced by JupyterLab prior to 4.5.7. The PyPI Extension Manager was not contained to packages listed on the default PyPI index.\n\nThis has security implications for deployments that:\n- have allow-listed specific extensions with aim to prevent users from installing packages\n- have the kernel and terminals disabled or delegated to remote hosts (thus no access to install packages in the single-user server environment)\n- have multi-tenant deployments that is not configured for untrusted users (as per documented on JupyterHub https://jupyterhub.readthedocs.io/en/5.2.1/explanation/websecurity.html)\n- have the (default) PyPI Extension Manager enabled\n\n### Impact\n\nAn authenticated attacker - such as a student in a shared JupyterHub environment or a user in a multi-tenant JupyterLab deployment - can escalate their privileges. This might allow for data exfiltration, lateral movement within the network, and persistent compromise of the server infrastructure.\n\n### Patches\n\nJupyterLab [`v4.5.7`](https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.7) contains the patch.\n\nUsers of applications that depend on JupyterLab, such as Notebook v7+, should update `jupyterlab` package too.\n\n### Workarounds\n\nSwitch to read-only extension manager by adding the following command line option:\n\n```bash\n--LabApp.extension_manager=readonly\n```\n\nor the following traitlet:\n\n```python\nc.LabApp.extension_manager = 'readonly'\n```\n\nYou can confirm that the read-only manager is in use from GUI:\n\n\u003cimg width=\"293\" height=\"293\" alt=\"image\" src=\"https://github.com/user-attachments/assets/8016c809-633e-4ed0-a5bc-6bc4793caa0f\" /\u003e\n\nNote: configuration of a PyPI proxy with allow-listed packages is not sufficient to protect from this vulnerability.\n\n### References\n\n- allow-list https://jupyterlab.readthedocs.io/en/stable/user/extensions.html#listing-configuration\n- https://jupyterhub.readthedocs.io/en/5.2.1/explanation/websecurity.html\n- https://jupyterlab.readthedocs.io/en/latest/user/extensions.html#extension-manager-implementations","status":"published","published":"2026-05-05T20:53:18Z","modified":"2026-06-08T20:15:07Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20","CWE-88","CWE-602"],"updated_at":"2026-11-02T14:40:20.187636Z"}],"nvd":[{"id":"CVE-2026-42266","description":"JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.","status":"published","published":"2026-05-13T16:16:47.017Z","modified":"2026-11-11T20:10:00.273Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-88","CWE-602"],"updated_at":"2026-11-11T21:26:15.366289Z"}],"osv":[{"id":"CVE-2026-42266","title":"JupyterLab has an Extension Manager API/GUI Policy Discrepancy allowing 3rd party (malicious) extensions install via POST request.","description":"JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.","status":"published","published":"2026-05-13T15:08:49.846Z","modified":"2026-11-06T10:46:33.901955112Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-602","CWE-88"],"updated_at":"2026-11-06T11:08:47.346964Z"},{"id":"DEBIAN-CVE-2026-42266","description":"JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.","status":"published","published":"2026-05-13T16:16:47.017Z","modified":"2026-10-01T03:03:22.85730463Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:54.892385Z"},{"id":"GHSA-37w4-hwhx-4rc4","title":"JupyterLab has an Extension Manager API/GUI Policy Discrepancy, allowing 3rd party (malicious) extensions install via POST request","description":"The allow-list of extensions that can be installed from PyPI Extension Manager (`allowed_extensions_uris`) is not correctly enforced by JupyterLab prior to 4.5.7. The PyPI Extension Manager was not contained to packages listed on the default PyPI index.\n\nThis has security implications for deployments that:\n- have allow-listed specific extensions with aim to prevent users from installing packages\n- have the kernel and terminals disabled or delegated to remote hosts (thus no access to install packages in the single-user server environment)\n- have multi-tenant deployments that is not configured for untrusted users (as per documented on JupyterHub https://jupyterhub.readthedocs.io/en/5.2.1/explanation/websecurity.html)\n- have the (default) PyPI Extension Manager enabled\n\n### Impact\n\nAn authenticated attacker - such as a student in a shared JupyterHub environment or a user in a multi-tenant JupyterLab deployment - can escalate their privileges. This might allow for data exfiltration, lateral movement within the network, and persistent compromise of the server infrastructure.\n\n### Patches\n\nJupyterLab [`v4.5.7`](https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.7) contains the patch.\n\nUsers of applications that depend on JupyterLab, such as Notebook v7+, should update `jupyterlab` package too.\n\n### Workarounds\n\nSwitch to read-only extension manager by adding the following command line option:\n\n```bash\n--LabApp.extension_manager=readonly\n```\n\nor the following traitlet:\n\n```python\nc.LabApp.extension_manager = 'readonly'\n```\n\nYou can confirm that the read-only manager is in use from GUI:\n\n\u003cimg width=\"293\" height=\"293\" alt=\"image\" src=\"https://github.com/user-attachments/assets/8016c809-633e-4ed0-a5bc-6bc4793caa0f\" /\u003e\n\nNote: configuration of a PyPI proxy with allow-listed packages is not sufficient to protect from this vulnerability.\n\n### References\n\n- allow-list https://jupyterlab.readthedocs.io/en/stable/user/extensions.html#listing-configuration\n- https://jupyterhub.readthedocs.io/en/5.2.1/explanation/websecurity.html\n- https://jupyterlab.readthedocs.io/en/latest/user/extensions.html#extension-manager-implementations","status":"published","published":"2026-05-05T20:53:18Z","modified":"2026-09-10T03:51:04.397852198Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20","CWE-602","CWE-88"],"updated_at":"2026-11-02T15:46:35.406455Z"},{"id":"PYSEC-2026-164","description":"JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.","status":"published","published":"2026-05-13T16:16:47.017Z","modified":"2026-05-27T13:56:09.132550385Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:55.06457Z"},{"id":"UBUNTU-CVE-2026-42266","description":"JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.","status":"published","published":"2026-05-13T16:16:00Z","modified":"2026-10-17T12:58:16.78012619Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:18.393417Z"},{"id":"BIT-jupyterlab-2026-42266","title":"JupyterLab has an Extension Manager API/GUI Policy Discrepancy allowing 3rd party (malicious) extensions install via POST request.","description":"JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.0.0 to 4.5.6, the allow-list of extensions that can be installed from PyPI Extension Manager (allowed_extensions_uris) is not correctly enforced by JupyterLab. The PyPI Extension Manager was not contained to packages listed on the default PyPI index. This vulnerability is fixed in 4.5.7.","status":"published","published":"2026-05-15T08:42:28.664Z","modified":"2026-09-08T08:48:23.725374261Z","updated_at":"2026-11-02T15:28:31.782692Z"},{"id":"openSUSE-SU-2026:10748-1","title":"jupyter-jupyterlab-4.5.7-1.1 on GA media","description":"These are all security issues fixed in the jupyter-jupyterlab-4.5.7-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-05-11T00:00:00Z","modified":"2026-05-12T08:45:48.797998Z","updated_at":"2026-11-02T16:58:38.415593Z"}]}}