CVE-2026-42266: Extension Installation Vulnerability in JupyterLab
प्लेटफ़ॉर्म
python
घटक
jupyterlab
में ठीक किया गया
4.5.7
CVE-2026-42266 is a high-severity vulnerability affecting JupyterLab versions 4.0.0 through 4.5.6. It allows attackers to bypass the intended restriction on extension sources, enabling the installation of malicious extensions from outside the default PyPI index. This can lead to arbitrary code execution within the JupyterLab environment. The vulnerability is fixed in version 4.5.7 and has been published on May 13, 2026.
इस CVE को अपने प्रोजेक्ट में पहचानें
अपनी requirements.txt फ़ाइल अपलोड करें और तुरंत जानें कि आप प्रभावित हैं या नहीं।
प्रभाव और हमले की स्थितियाँअनुवाद हो रहा है…
The core impact of CVE-2026-42266 lies in the ability to install arbitrary extensions. An attacker could leverage this to inject malicious code into the JupyterLab environment, gaining control over user sessions and potentially accessing sensitive data. This could manifest as a rogue extension that steals credentials, modifies notebooks, or even compromises the underlying system. The blast radius extends to any user utilizing a vulnerable JupyterLab instance, particularly those with administrative privileges or access to sensitive data within notebooks. While no direct precedent exists mirroring this exact vulnerability, the potential for malicious extension installation shares similarities with other supply chain attacks targeting software ecosystems.
शोषण संदर्भअनुवाद हो रहा है…
CVE-2026-42266 is currently not listed on KEV (Kernel Exploit Vulnerability Database) or EPSS (Exploit Prediction Scoring System). The lack of an EPSS score suggests a low to medium probability of exploitation, primarily due to the technical expertise required to identify and exploit the vulnerability. No public proof-of-concept (POC) code has been publicly released as of the publication date. The NVD (National Vulnerability Database) and CISA (Cybersecurity and Infrastructure Security Agency) entries were published on May 13, 2026.
खतरा खुफिया
एक्सप्लॉइट स्थिति
CISA SSVC
CVSS वेक्टर
इन मेट्रिक्स का क्या मतलब है?
- Attack Vector
- नेटवर्क — इंटरनेट के माध्यम से दूरस्थ रूप से शोषण योग्य। कोई भौतिक या स्थानीय पहुंच आवश्यक नहीं।
- Attack Complexity
- निम्न — कोई विशेष शर्त नहीं। विश्वसनीय रूप से शोषण योग्य।
- Privileges Required
- निम्न — कोई भी वैध उपयोगकर्ता खाता पर्याप्त है।
- User Interaction
- कोई नहीं — स्वचालित और मूक हमला। पीड़ित कुछ नहीं करता।
- Scope
- अपरिवर्तित — प्रभाव केवल कमज़ोर घटक तक सीमित।
- Confidentiality
- उच्च — पूर्ण गोपनीयता हानि। हमलावर सभी डेटा पढ़ सकता है।
- Integrity
- उच्च — हमलावर कोई भी डेटा लिख, बदल या हटा सकता है।
- Availability
- उच्च — पूर्ण क्रैश या संसाधन समाप्ति। पूर्ण सेवा से इनकार।
प्रभावित सॉफ्टवेयर
कमजोरी वर्गीकरण (CWE)
समयरेखा
- आरक्षित
- प्रकाशित
शमन और वर्कअराउंडअनुवाद हो रहा है…
The primary mitigation for CVE-2026-42266 is to upgrade JupyterLab to version 4.5.7 or later. If upgrading is not immediately feasible, consider implementing stricter network controls to prevent JupyterLab instances from accessing untrusted PyPI mirrors. Additionally, review and audit existing JupyterLab extensions to identify any potentially malicious or outdated components. While a WAF or proxy cannot directly prevent this vulnerability, they can be configured to monitor for suspicious extension installation requests. There are no specific Sigma or YARA rules available for this vulnerability at this time, but monitoring extension installation logs is recommended.
कैसे ठीक करेंअनुवाद हो रहा है…
Actualice JupyterLab a la versión 4.5.7 o superior para mitigar esta vulnerabilidad. La actualización corrige la política de cumplimiento de la lista de control de acceso de las extensiones, evitando la instalación de extensiones maliciosas desde fuentes no autorizadas.
अक्सर पूछे जाने वाले सवालअनुवाद हो रहा है…
What is CVE-2026-42266 — Extension Installation Vulnerability in JupyterLab?
CVE-2026-42266 is a high-severity vulnerability in JupyterLab (versions 4.0.0–<4.5.7) that allows attackers to bypass extension source restrictions and install malicious extensions from arbitrary PyPI sources, potentially leading to code execution.
Am I affected by CVE-2026-42266 in JupyterLab?
You are affected if you are using JupyterLab versions 4.0.0 through 4.5.6. Check your version using jupyter lab --version.
How do I fix CVE-2026-42266 in JupyterLab?
Upgrade JupyterLab to version 4.5.7 or later. This resolves the vulnerability by correctly enforcing the allowedextensionsuris list.
Is CVE-2026-42266 being actively exploited?
As of May 13, 2026, there is no public evidence of active exploitation, but the vulnerability's potential impact warrants immediate remediation.
Where can I find the official JupyterLab advisory for CVE-2026-42266?
Refer to the official JupyterLab security advisory, which can be found on the JupyterLab GitHub repository and the NVD database (search for CVE-2026-42266).
क्या आपका प्रोजेक्ट प्रभावित है?
अपनी डिपेंडेंसी फ़ाइल अपलोड करें और तुरंत जानें कि यह CVE और अन्य आपको प्रभावित करती हैं या नहीं।
इस CVE को अपने प्रोजेक्ट में पहचानें
अपनी requirements.txt फ़ाइल अपलोड करें और तुरंत जानें कि आप प्रभावित हैं या नहीं।
अपने Python प्रोजेक्ट को अभी स्कैन करें — कोई खाता नहीं
Upload your requirements.txt and get the vulnerability report instantly. No account. Uploading the file is just the start: with an account you get continuous monitoring, Slack/email alerts, multi-project and white-label reports.
अपनी डिपेंडेंसी फ़ाइल ड्रैग और ड्रॉप करें
composer.lock, package-lock.json, requirements.txt, Gemfile.lock, pubspec.lock, Dockerfile...