{"id":"CVE-2026-73627","state":"PUBLISHED","title":"JupyterLab 4.6.0 Plugin Manager Lock-Rule Enforcement Bypass","description":"JupyterLab (pip package 'jupyterlab') versions >=4.1.0,<=4.5.9 and >=4.6.0,<=4.6.1 contain a plugin manager lock-rule enforcement bypass. Two server-side enforcement gaps allow an authenticated user to circumvent administrator lock rules by making direct requests to the /lab/api/plugins endpoint, enabling or disabling plugins that were locked — including child plugins of multi-plugin extensions and plugins locked via the 'lock all' mechanism. This can impact data integrity and bypass hardening or restrictions (e.g., download/upload limits) implemented through locked plugins. Fixed in versions 4.6.2 and 4.5.10.","publishedAt":"2026-08-13T11:28:26.249Z","updatedAt":"2026-09-30T17:20:27.405Z","severity":{"score":6,"label":"Medium","version":"4.0","vector":"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","source":"VulnCheck"},"assigner":"VulnCheck","products":["jupyterlab jupyterlab"],"affected":[{"vendor":"jupyterlab","product":"jupyterlab","packageURL":"pkg:pypi/jupyterlab","defaultStatus":"unaffected","versions":[{"version":"4.6.0","status":"affected","lessThanOrEqual":"4.6.1","versionType":"semver"}]},{"vendor":"jupyterlab","product":"jupyterlab","packageURL":"pkg:pypi/jupyterlab","defaultStatus":"unaffected","versions":[{"version":"4.1.0","status":"affected","lessThanOrEqual":"4.5.9","versionType":"semver"}]}],"references":["https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-h5v5-8746-g7mm","https://www.vulncheck.com/advisories/jupyterlab-plugin-manager-lock-rule-enforcement-bypass"],"weaknesses":["CWE-602"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73627.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73627","state":"PUBLISHED","datePublished":"2026-08-13T11:28:26.249Z","dateUpdated":"2026-09-30T17:20:27.405Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-08-13T11:17:25.160Z"},"containers":{"cna":{"title":"JupyterLab 4.6.0 Plugin Manager Lock-Rule Enforcement Bypass","descriptions":[{"lang":"en","value":"JupyterLab (pip package 'jupyterlab') versions >=4.1.0,<=4.5.9 and >=4.6.0,<=4.6.1 contain a plugin manager lock-rule enforcement bypass. Two server-side enforcement gaps allow an authenticated user to circumvent administrator lock rules by making direct requests to the /lab/api/plugins endpoint, enabling or disabling plugins that were locked — including child plugins of multi-plugin extensions and plugins locked via the 'lock all' mechanism. This can impact data integrity and bypass hardening or restrictions (e.g., download/upload limits) implemented through locked plugins. Fixed in versions 4.6.2 and 4.5.10."}],"affected":[{"vendor":"jupyterlab","product":"jupyterlab","packageURL":"pkg:pypi/jupyterlab","defaultStatus":"unaffected","versions":[{"version":"4.6.0","status":"affected","lessThanOrEqual":"4.6.1","versionType":"semver"}]},{"vendor":"jupyterlab","product":"jupyterlab","packageURL":"pkg:pypi/jupyterlab","defaultStatus":"unaffected","versions":[{"version":"4.1.0","status":"affected","lessThanOrEqual":"4.5.9","versionType":"semver"}]}],"references":[{"url":"https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-h5v5-8746-g7mm","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-h5v5-8746-g7mm)"},{"url":"https://www.vulncheck.com/advisories/jupyterlab-plugin-manager-lock-rule-enforcement-bypass","name":"VulnCheck Advisory: JupyterLab 4.6.0 Plugin Manager Lock-Rule Enforcement Bypass","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-602","lang":"en","description":"Client-Side Enforcement of Server-Side Security","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-09-30T17:20:27.405Z"},"datePublic":"2026-07-21T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.1.0:*:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.5.0:rc0:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.5.0:rc1:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.5.0:-:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.5.1:*:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.5.2:*:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.5.3:*:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.5.4:*:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.5.5:*:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.5.6:*:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.5.7:*:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha0:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha1:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha2:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha3:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha4:*:*:*:*:*:*"},{"vulnerable":true,"criteria":"cpe:2.3:a:jupyter:jupyterlab:4.6.0:alpha5:*:*:*:*:*:*"}]}]}],"credits":[{"lang":"en","value":"rexpository","type":"reporter"},{"lang":"en","value":"MUFFANUJ","type":"finder"},{"lang":"en","value":"krassowski","type":"coordinator"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-15T03:13:31.123307Z","id":"CVE-2026-73627","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-15T03:13:40.300Z"}}]}}}