https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Thu, 01 Oct 2026 19:28:08 +0000 https://vulnerability.circl.lu/vuln/cve-2026-73626 <p><strong>Affected:</strong> jupyterlab</p> <p>JupyterLab versions &gt;=4.6.0,&lt;=4.6.1 and &lt;=4.5.9 contain an allowlist/blocklist enforcement gap in PyPIExtensionManager.install(). A missing &#39;await&#39; caused the is_install_allowed coroutine to never execute, so the extension allowlist/blocklist check was not enforced for direct callers of install(). The stock JupyterLab HTTP API and Extension Manager UI are not affected, as they perform a separate, correctly awaited check. The issue affects only deployments where a custom extension or downstream integration imports PyPIExtensionManager and calls install() directly with a package name influenced by untrusted input, an allowlist/blocklist is configured, the PyPI Extension Manager is enabled, and kernels and terminals are disabled or delegated to remote hosts. Fixed in JupyterLab 4.6.2 and 4.5.10.</p> <p><strong>Affected:</strong> jupyterlab</p> <p>JupyterLab versions &gt;=4.6.0,&lt;=4.6.1 and &lt;=4.5.9 contain an allowlist/blocklist enforcement gap in PyPIExtensionManager.install(). A missing &#39;await&#39; caused the is_install_allowed coroutine to never execute, so the extension allowlist/blocklist check was not enforced for direct callers of install(). The stock JupyterLab HTTP API and Extension Manager UI are not affected, as they perform a separate, correctly awaited check. The issue affects only deployments where a custom extension or downstream integration imports PyPIExtensionManager and calls install() directly with a package name influenced by untrusted input, an allowlist/blocklist is configured, the PyPI Extension Manager is enabled, and kernels and terminals are disabled or delegated to remote hosts. Fixed in JupyterLab 4.6.2 and 4.5.10.</p> https://vulnerability.circl.lu/vuln/cve-2026-73626