{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-73627", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-08-13T11:17:25.160Z", "datePublished": "2026-08-13T11:28:26.249Z", "dateUpdated": "2026-08-13T11:28:26.249Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-13T11:28:26.249Z"}, "datePublic": "2026-07-21T00:00:00.000Z", "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 \u2014 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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Client-Side Enforcement of Server-Side Security", "cweId": "CWE-602", "type": "CWE"}]}], "affected": [{"vendor": "jupyterlab", "product": "jupyterlab", "defaultStatus": "affected", "packageURL": "pkg:pypi/jupyterlab", "versions": [{"version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.6.0"}]}, {"vendor": "jupyterlab", "product": "jupyterlab", "defaultStatus": "affected", "packageURL": "pkg:pypi/jupyterlab", "versions": [{"version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.1.0"}]}], "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:*:*:*:*:*:*"}]}]}], "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"}}], "references": [{"url": "https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-h5v5-8746-g7mm", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-h5v5-8746-g7mm)"}, {"name": "VulnCheck Advisory: JupyterLab 4.6.0 Plugin Manager Lock-Rule Enforcement Bypass", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/jupyterlab-plugin-manager-lock-rule-enforcement-bypass"}], "credits": [{"lang": "en", "value": "rexpository", "type": "reporter"}, {"lang": "en", "value": "MUFFANUJ", "type": "finder"}, {"lang": "en", "value": "krassowski", "type": "coordinator"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "affected", "packageURL": "pkg:pypi/jupyterlab", "product": "jupyterlab", "vendor": "jupyterlab", "versions": [{"lessThan": "4.6.0", "status": "unaffected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "affected", "packageURL": "pkg:pypi/jupyterlab", "product": "jupyterlab", "vendor": "jupyterlab", "versions": [{"lessThan": "4.1.0", "status": "unaffected", "version": "0", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "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 \u2014 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."}], "id": "CVE-2026-73627", "lastModified": "2026-08-13T12:17:28.043", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.0, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-08-13T12:17:28.043", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-h5v5-8746-g7mm"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/jupyterlab-plugin-manager-lock-rule-enforcement-bypass"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-602"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

{}

{"created": "2026-08-13T13:30:17.319627+00:00", "updated": "2026-08-13T13:30:17.319633+00:00", "vendors": []}