CVE-2025-31125 Vite Vitejs: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Feb 12, 2026
What to do
- Install Vite's security update for Vitejs. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- Vite Vitejs Improper Access Control Vulnerability
- Product
- Vite Vitejs
- CISA description
- Vite Vitejs contains an improper access control vulnerability that exposes content of non-allowed files using ?inline&import or ?raw?import. Only apps explicitly exposing the Vite dev server to the network (using --host or server.host config option) are affected.
- Type of flaw
- Login or permission bypass (CWE-200, CWE-284)
- Confirmed exploited
- Jan 22, 2026
- US federal patch deadline
- Feb 12, 2026
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Answering about CVE-2025-31125 ·
Questions about CVE-2025-31125
Is CVE-2025-31125 being exploited?
Yes. CISA added CVE-2025-31125 to its Known Exploited Vulnerabilities catalog on Jan 22, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2025-31125?
Install Vite's security update for Vitejs. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2025-31125?
Only if you use Vite Vitejs. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.