CVE-2026-53571
Info disclosure via Windows path normalization in Vite dev server.
Is CVE-2026-53571 being exploited?
Not confirmed. CVE-2026-53571 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 0.58% probability of exploitation in the next 30 days.
How severe is CVE-2026-53571?
CVE-2026-53571 is rated High with a CVSS score of 8.2. 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-2026-53571?
Yes. A fix has been recorded for CVE-2026-53571. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-53571 affect?
CVE-2026-53571 affects Vite dev server (Windows) < 8.0.16, <7.3.5, <6.4.3. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-53571?
Upgrade to fixed versions (8.0.16+, 7.3.5+, 6.4.3+).
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Leads to read access to sensitive files (e.g., .env, certs) by bypassing NTFS/ADS path checks and 8.3 aliases on Windows.
Immediate action required
- affected>= 8.0.0 and < 8.0.16
- affected>= 7.0.0 and < 7.3.5
- affected< 6.4.3
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.