CVE-2026-2950 Affecting py3-jupyterlab package, versions <4.6.1-r1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.4% (33rd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-PY3JUPYTERLAB-17802609
  • published3 Jul 2026
  • disclosed31 Mar 2026

Introduced: 31 Mar 2026

CVE-2026-2950  (opens in a new tab)

How to fix?

Upgrade Chainguard py3-jupyterlab to version 4.6.1-r1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream py3-jupyterlab package and not the py3-jupyterlab package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

The _.unset and _.omit functions in Lodash are vulnerable to prototype pollution. The fix for CVE-2025-13465 only guards against string key members, so an attacker can bypass the check by passing array-wrapped path segments. This allows deletion of properties from built-in prototypes such as Object.prototype, Number.prototype, and String.prototype. The issue permits deletion of prototype properties but does not allow overwriting their original behavior. The issue is patched from 4.18.0 to 4.18.1 depending on the package: lodash, lodash-es, and lodash-amd in 4.18.1, and the standalone lodash.unset and lodash.omit packages in 4.18.0.

CVSS Base Scores

version 3.1