PatchTheCVEwebpack-dev-server vulnerabilities and fixes
Recent CVEs affecting webpack-dev-server, with upgrade or downgrade steps. 3 tracked.
Also searched as: webpack dev server.
webpack-dev-server has 3 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 3. Most recent: 2026-07-03. Highest priority: CVE-2026-14631 (score 34/100).
- CVE-2026-14620 MEDIUM 4.7 UPGRADE webpack-dev-server versions 5.2.5 and earlier expose two internal developer endpoints, /webpack-dev-server/ope
- CVE-2026-14631 MEDIUM 5.3 UPGRADE webpack-dev-server versions 5.2.5 and earlier terminate the whole Node.js process when an unauthenticated peer
- CVE-2026-9595 MEDIUM 5.3 UPGRADE Impact: When a user-configured proxy on webpack-dev-server has a broad context (e.g
FAQ
How do I fix webpack-dev-server vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is webpack-dev-server being exploited right now?
None of the tracked webpack-dev-server CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which webpack-dev-server CVE should I patch first?
CVE-2026-14631 currently ranks highest (34/100): webpack-dev-server versions 5.2.5 and earlier terminate the whole Node.js process when an unauthenticated peer.