Bug 2489685 - CVE-2026-48779 jupyterlab: ws: Denial of Service via memory exhaustion from small WebSocket fragments [fedora-all]
Summary: CVE-2026-48779 jupyterlab: ws: Denial of Service via memory exhaustion from s...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: jupyterlab
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Lumír Balhar
QA Contact:
URL:
Whiteboard: {"flaws": ["0b7d7cff-5b53-4c6c-ba7b-2...
Depends On:
Blocks: CVE-2026-48779
TreeView+ depends on / blocked
 
Reported: 2026-06-16 22:28 UTC by Jon Moroney
Modified: 2026-06-17 10:17 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-06-17 10:17:54 UTC
Type: ---
Embargoed:


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Description Jon Moroney 2026-06-16 22:28:18 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Comment 1 Lumír Balhar 2026-06-17 10:17:54 UTC
ws is explicitly declared as a webpack external in staging/webpack.config.js and is entirely absent from the browser-side static bundle (absent from third-party-licenses.json). JupyterLab's browser build uses the native WebSocket global; ws is a Node.js-only library used by @jupyterlab/services only in Node.js environments (tests/server-side), never bundled for the browser.


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