CVE-2026-71319
Unauthenticated HMR RPC in Nuxt DevTools enables remote code execution on dev hosts
Is CVE-2026-71319 being exploited?
Not confirmed. CVE-2026-71319 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.36% probability of exploitation in the next 30 days.
How severe is CVE-2026-71319?
CVE-2026-71319 is rated Critical with a CVSS score of 9.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-71319?
Yes. A fix has been recorded for CVE-2026-71319. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-71319 affect?
CVE-2026-71319 affects Nuxt < 3.3.1, Nuxt DevTools (development mode), Vite HMR WebSocket endpoint (ws://<host>:<port>/, vite-hmr). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-71319?
Upgrade Nuxt to >=3.3.1 and restrict or block Vite HMR endpoints; isolate dev environments.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated access to Vite HMR RPC allows attacker to set openInEditor and execute arbitrary OS commands on developer machines.
Immediate action required
- affected< 3.3.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.