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🛡️ GHSA-h5v5-8746-g7mm — jupyterlab

⚪ Unknown ✅ No Known Exploit CWE-602 OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

JupyterLab PluginManager lock-rule enforcement bypass

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.

Impact

Users could workaround the plugin manager lock rules via direct API access for either:

  • child plugins of extensions covering multiple plugins
  • when "lock all" was issued by the administrator

The 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.

Patches

JupyterLab [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.

Users of applications that depend on JupyterLab, such as Notebook v7+, should update jupyterlab package too.

Workarounds

Manually 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).

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. Rated impact: confidentiality low, integrity high, availability none.

CVSS metrics in full

The score comes from this 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

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Attack requirements: Present — the target has to be in a particular state for the attack to work.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: None.

Weakness class

GHSA-h5v5-8746-g7mm is classified as CWE-602: Client-Side Enforcement of Server-Side Security. The product is composed of a server that relies on the client to implement a mechanism that is intended to protect the server.

Affected software

GHSA-h5v5-8746-g7mm is recorded against 1 package.

  • jupyterlab (from 4.1.0 up to 4.5.10)

Timeline and source

Published on 22 July 2026 and last revised on 8 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)
github.com (Web)

Other advisories for this package

jupyterlab has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-602: Client-Side Enforcement of Server-Side Security) in other software:

Details

Severity Unknown
CVSS Score N/A
CVSS 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
CWE CWE-602
Public Exploit ✅ No
Source OSV
Published 2026-07-22
Updated 2026-08-20
Modified 2026-08-08
Fix URL N/A

Affected Packages

Software From version Fixed in
jupyterlab 4.1.0 4.5.10

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