CVE-2026-73415

Description

A flaw was found in JupyterLab. The ImageViewer component improperly handles specially crafted SVG images by revoking a blob URL too early. This allows a remote attacker to exploit a cross-site scripting (XSS) vulnerability when a malicious image is opened through the image viewer and subsequently in a new browser tab. Successful exploitation could lead to arbitrary code execution on the JupyterLab server.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score8N/AN/A
Attack VectorNetworkN/AN/A
Attack ComplexityHighN/AN/A
Privileges RequiredLowN/AN/A
User InteractionRequiredN/AN/A
ScopeChangedN/AN/A
ConfidentialityHighN/AN/A
Integrity ImpactHighN/AN/A
Availability ImpactHighN/AN/A

Vector

Red Hat: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

Understanding the Weakness (CWE)

CWE-911

Availability

Technical Impact: DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)

An adversary that can cause a resource counter to become inaccurate may be able to create situations where resources are not accounted for and not released, thus causing resources to become scarce for future needs.

Availability

Technical Impact: DoS: Crash, Exit, or Restart

An adversary that can cause a resource counter to become inaccurate may be able to force an error that causes the product to crash or exit out of its current operation.

Frequently Asked Questions

Not sure what something means? Check out our Security Glossary.

Want to get errata notifications? Sign up here.