Time-of-check Time-of-use (TOCTOU) Race Condition Affecting notebook package, versions [7.5.6,7.6.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PYTHON-NOTEBOOK-20883329
- published13 Oct 2026
- disclosed13 Oct 2026
- creditRex Liu
Introduced: 13 Oct 2026
NewCVE-2026-102832 (opens in a new tab)How to fix?
Upgrade notebook to version 7.6.3 or higher.
Overview
notebook is a web application that allows you to create and share documents that contain live code, equations, visualizations, and explanatory text.
Affected versions of this package are vulnerable to Time-of-check Time-of-use (TOCTOU) Race Condition via the CommandLinker trust mechanism, where a command-link click triggers a trust dialog and, upon user approval, executes the associated trust command without verifying that the DOM boundary being trusted corresponds to the widget that initiated the trust request. An attacker who can embed malicious content in a notebook or Markdown document can cause the trust action to be applied to an unintended widget, effectively bypassing the trust boundary and elevating the privilege of untrusted content.