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CVE-2026-73415— jupyterlab: Image viewer in JupyterLab allows XSS when opening malicious image in new browser tab

CVSS 7.5 · High EPSS 0.57% · P45

Possible ATT&CK Techniques 1AI

T1059.007 · JavaScript

Affected Version Matrix 2

VendorProductVersion RangeStatus
jupyterlabjupyterlab< 4.5.10affected
>= 4.6.0, < 4.6.2affected
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I. Basic Information for CVE-2026-73415

Vulnerability Information
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Vulnerability Title
jupyterlab: Image viewer in JupyterLab allows XSS when opening malicious image in new browser tab
Source: CVE Program / CVE List V5
Vulnerability Description
jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. Prior to 4.5.10 and 4.6.2, in packages/imageviewer/src/widget.ts, JupyterLab's ImageViewer uses URL.createObjectURL for a specially crafted SVG image and revokes the blob URL too early, allowing the image to retain an executable same-origin context when it is opened through the image viewer and then opened in a new browser tab. The resulting cross-site scripting can be used to execute arbitrary code on the JupyterLab server. This issue is fixed in versions 4.5.10 and 4.6.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
jupyterlab 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
JupyterLab jupyterlab是JupyterLab基金会的一款Web应用开发框架。 jupyterlab 4.5.10之前版本和4.6.0至4.6.2之前版本存在跨站脚本漏洞，该漏洞源于packages/imageviewer/src/widget.ts文件中ImageViewer对特制SVG图像使用URL.createObjectURL并过早撤销blob URL，导致图像保留可执行同源环境，可能造成跨站脚本攻击，进而导致在JupyterLab服务器上执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
jupyterlabjupyterlab < 4.5.10 -

II. Public POCs for CVE-2026-73415

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7575 chars
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III. Intelligence Information for CVE-2026-73415

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Patches & Fixes for CVE-2026-73415 (5)

Vendor Advisories for CVE-2026-73415 (1)

Vendor Pages for CVE-2026-73415 (2)

IV. Related Vulnerabilities

Same product: jupyterlab
Same vendor: jupyterlab
Same weakness: CWE-79

V. Comments for CVE-2026-73415

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