Missing Authorization Affecting jupyter-server package, versions [2.0.0,2.6.0)
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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- published22 Oct 2026
- disclosed22 Oct 2026
- creditanauaque
Introduced: 22 Oct 2026
NewCVE-2026-114135 (opens in a new tab)How to fix?
Upgrade jupyter-server to version 2.6.0 or higher.
Overview
Affected versions of this package are vulnerable to Missing Authorization in the gateway handlers, where gateway-specific kernel and kernelspec endpoints are registered separately from the standard server handlers. An authenticated low-privileged user can send requests to gateway-proxied kernel endpoints in ways that bypass authorization checks enforced by the standard handler stack, gaining unauthorized read, write, and execution access to kernel resources.