{"id":"GHSA-h5v5-8746-g7mm","summary":"JupyterLab PluginManager lock-rule enforcement bypass","details":"JupyterLab's plugin manager exposes administrator controls intended to prevent users from enabling or disabling selected plugins. Two server-side enforcement gaps let an authenticated user bypass those controls with direct requests to `/lab/api/plugins`.\n\n### Impact\n\nUsers could workaround the plugin manager lock rules via direct API access for either:\n- child plugins of extensions covering multiple plugins\n- when \"lock all\" was issued by the administrator\n\nThe integrity of data can be impacted, and any hardening or restrictions on permitted user actions (e.g. download/upload limits) within the single-user server can be circumvented if those were implemented with plugins that were locked using the faulty mechanisms.\n\n### Patches\n\nJupyterLab [`v4.6.2`](https://github.com/jupyterlab/jupyterlab/releases/tag/v4.6.2) and [`v4.5.10`](https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.10) contain the patch.\n\nUsers of applications that depend on JupyterLab, such as Notebook v7+, should update `jupyterlab` package too.\n\n### Workarounds\n\nManually lock all plugins that should be locked. The core plugin identifiers can be found in [the documentation](https://jupyterlab.readthedocs.io/en/latest/extension/extension_points.html#core-plugins) and identifiers for all installed extensions are listed in the [Plugin Manager](https://jupyterlab.readthedocs.io/en/latest/user/extensions.html#managing-plugins-with-plugin-manager).","aliases":["BIT-jupyterlab-2026-73627","CVE-2026-73627"],"modified":"2026-10-01T03:56:05.514404364Z","published":"2026-07-22T23:13:34Z","database_specific":{"cwe_ids":["CWE-602","CWE-863"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-07-22T23:13:34Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-h5v5-8746-g7mm"},{"type":"WEB","url":"https://github.com/jupyterlab/jupyterlab/pull/19184"},{"type":"WEB","url":"https://github.com/jupyterlab/jupyterlab/pull/19185"},{"type":"WEB","url":"https://github.com/jupyterlab/jupyterlab/pull/19186"},{"type":"WEB","url":"https://github.com/jupyterlab/jupyterlab/commit/be9303f5bcd5308eaeae953c5a3c903046682c2c"},{"type":"WEB","url":"https://github.com/jupyterlab/jupyterlab/commit/f1beab4a2027af4719d6edc07d52d6cf5a39a432"},{"type":"PACKAGE","url":"https://github.com/jupyterlab/jupyterlab"},{"type":"WEB","url":"https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.10"},{"type":"WEB","url":"https://github.com/jupyterlab/jupyterlab/releases/tag/v4.6.2"}],"affected":[{"package":{"name":"jupyterlab","ecosystem":"PyPI","purl":"pkg:pypi/jupyterlab"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.6.0"},{"fixed":"4.6.2"}]}],"versions":["4.6.0","4.6.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-h5v5-8746-g7mm/GHSA-h5v5-8746-g7mm.json","last_known_affected_version_range":"\u003c= 4.6.1"}},{"package":{"name":"jupyterlab","ecosystem":"PyPI","purl":"pkg:pypi/jupyterlab"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.1.0"},{"fixed":"4.5.10"}]}],"versions":["4.1.0","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","4.5.7","4.5.8","4.5.9"],"database_specific":{"last_known_affected_version_range":"\u003c= 4.5.9","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-h5v5-8746-g7mm/GHSA-h5v5-8746-g7mm.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N"}]}