CVE-2026-73415 — CVE & Security Advisory Radar

🎯 CVE-2026-73415 HIGH 7.5 🔥 EPSS 57% 🧪 PoC 🇪🇺 EUVD

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CVE-2026-73415 | 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 r

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.

Klassifikation & Betroffenheit:

jupyterlab jupyterlab 4.6.0, < 4.6.2jupyterlab < 4.5.10

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') 🎯 High

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

🛡️ Empfohlene Mitigation: Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482]. Examples of libraries and frameworks that make it easier to generate properly encoded output include Microsoft's Anti-XSS library, the OWASP ESAPI Encoding module, and …

Vollständige Definition bei MITRE ➔

⚔️ Typische Angriffsmuster (CAPEC):

CAPEC-63 · Cross-Site Scripting (XSS) (Very High) CAPEC-85 · AJAX Footprinting (Low) CAPEC-209 · XSS Using MIME Type Mismatch (Medium) CAPEC-588 · DOM-Based XSS (Very High) CAPEC-591 · Reflected XSS (Very High) CAPEC-592 · Stored XSS (Very High)

🧩 Ähnliche Schwachstellen (Hersteller/Klasse/Score-Band):

CVE-2026-42266 8.8 CVE-2026-73417 8.6 CVE-2026-73626 7.7 CVE-2024-43805 7.6 CVE-2024-22421 7.6

🩹 Patch verfügbar (OSV):

🩹 af5f5b3c779f6d7170c1124f5818807fa18f3f63 (Commit) 🩹 150ba51f1c840edc399597a86a6fc3ed24ef60be (Commit)

📚 Referenzen & Quellen:

🇪🇺 Original-Eintrag (ENISA EUVD) 🇺🇸 NVD-Eintrag

Ausnutzungs-Zeitleiste:

Reserviert 2026

Veröffentlicht 08/2026

Heute 16.09.

CVSS-Vektor-Analyse: 7.5

AV · Angriffsvektor Netzwerk

AC · Komplexität Hoch

PR · Privilegien Keine

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

Veröffentlicht:12.08.2026

Aktualisiert:12.08.2026 20:54

Assigner (CNA):GitHub_M

EUVD-ID:EUVD-2026-57535

CWE-79: Cross-Site Scripting ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

Tier	2026-08-29	2026-09-15
≥90 %	4	0
≥50 %	4	0
≥10 %	3	0
<10 %	304	300

7.5 HIGH

🇪🇺 EUVD

EPSS

57%

CVE-2026-73415 🌐 Netzwerk (Remote) 🔓 Keine Authentifizierung nötig

🧪 jupyterlab

CVE-2026-73415 | 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 r

CWE-79: Cross-Site Scripting ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

12.08.2026

🛡️ Details ➔

Zero-Day & Vulnerability Intelligence Hub