HIGH

CVE-2026-102831

CVSS v3

8.1

HIGH

EPSS Score

0.2 %

exploit probability, as of 2026-09-30

CISA KEV

known exploited

Exploitation

—

SSVC status

Description

JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.5.0 until 4.5.11 and 4.6.4, from Notebook 7.5.0 until 7.6.3, and from JupyterLite Core 0.7.0 until 0.8.4, the system clipboard cell-paste path accepts attacker-controlled cell JSON without clearing metadata.trusted. When useSystemClipboardForCells is active and pasteCodeCellsWithoutOutput is disabled, a pasted code cell can mark HTML output as trusted,

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Published: 2026-09-29
Last Modified: 2026-09-29

Frequently asked questions

What is CVE-2026-102831?

Is CVE-2026-102831 actively exploited?

Active exploitation of CVE-2026-102831 has not been confirmed. Its EPSS score was 0.2% on 2026-09-30, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-102831?

CVE-2026-102831 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

Is CVE-2026-102831 affecting your environment?

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