JupyterLab Desktop: TCC Bypass via Insecure Entitlements (macOS)

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-54991
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-06 21:17:04 UTC
Updated2026-11-06 21:17:04 UTC
DescriptionJupyterLab Desktop is the cross-platform desktop application for JupyterLab. Prior to 4.6.2-1, JupyterLab Desktop for macOS declared the com.apple.security.cs.allow-dyld-environment-variables entitlement, allowing the dynamic linker to honor DYLD_INSERT_LIBRARIES despite the hardened runtime. An attacker who can already execute code as the current user can load an arbitrary dynamic library into the JupyterLab Desktop process and inherit TCC permissions previously granted to the application, including access to protected Documents, Desktop, or Downloads folders without another macOS prompt. Exploitation requires existing local code execution and prior TCC grants; it does not provide initial or remote code execution. Windows and Linux are not affected. This vulnerability is fixed in 4.6.2-1.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.001920000 probability, percentile 0.089260000 (date 2026-11-08)

Problem Types: CWE-250 | CWE-693 | CWE-250 CWE-250: Execution with Unnecessary Privileges | CWE-693 CWE-693: Protection Mechanism Failure

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Jupyterlab Jupyterlab-desktop affected < 4.6.2-1 Not specified

References

ReferenceSourceLinkTags
github.com/jupyterlab/jupyterlab-desktop/commit/302fb36caca62bbbba7bfaaf... [email protected] github.com
github.com/jupyterlab/jupyterlab-desktop/releases/tag/v4.6.2-1 [email protected] github.com
github.com/jupyterlab/jupyterlab-desktop/security/advisories/GHSA-8cvf-4... [email protected] github.com
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