CVE-2026-73415jupyterlab: Image viewer in JupyterLab allows XSS when opening malicious image in new browser tab
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 12, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
jupyterlab jupyterlab jupyterlab:jupyterlab (from the name) | before 4.5.10; from 4.6.0, < 4.6.2 | CNA record |
References
- https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-gx64-gj6p-pc4cx-refsource-confirm
- https://github.com/jupyterlab/jupyterlab/pull/19184x-refsource-misc
- https://github.com/jupyterlab/jupyterlab/pull/19185x-refsource-misc
- https://github.com/jupyterlab/jupyterlab/pull/19186x-refsource-misc
- https://github.com/jupyterlab/jupyterlab/commit/9365f020baec5221deaf11535ed554c06637c999x-refsource-misc
- https://github.com/jupyterlab/jupyterlab/commit/be9303f5bcd5308eaeae953c5a3c903046682c2cx-refsource-misc
- https://github.com/jupyterlab/jupyterlab/commit/f1beab4a2027af4719d6edc07d52d6cf5a39a432x-refsource-misc
- https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.10x-refsource-misc
- https://github.com/jupyterlab/jupyterlab/releases/tag/v4.6.2x-refsource-misc
- https://github.com/jupyterlab/jupyterlab/releases/tag/v4.7.0a1x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.