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CVE-2025-31125

From Exploited flaws, HARD’s guide to the flaws being used in attacks · Checked
This article is about a flaw in Vitejs. For every flaw being used in attacks, see Exploited flaws.

CVE-2025-31125 is a security flaw in Vitejs. Attackers can reach parts of Vitejs that should be locked to them. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 22 Jan 2026.[1]

Vitejs is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff.

Description

CISA calls it an improper access control in Vite Vitejs. In its words: “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.”[1]

The CVE record adds: “Vite is a frontend tooling framework for javascript. Vite 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. This vulnerability is fixed in 6.2.4, 6.1.3, 6.0.13, 5.4.16, and 4.5.11.”[2]

The underlying weakness is information exposure (CWE-200), improper access control (CWE-284), in MITRE’s list of common software weaknesses.

It scores 7.5 out of 10 on the Common Vulnerability Scoring System, which rates it high, scored by NVD using CVSS 3.1.[2]

Affected versions

NVD’s record doesn’t list version ranges for it. CISA names the product as Vite Vitejs.

Most families won’t have Vitejs; it’s for whoever looks after IT at work.

Exploitation

CISA added it to its catalog of known exploited vulnerabilities on 22 Jan 2026, 297 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 12 Feb 2026 to fix it.[1]

FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 75%. That’s in the top 1% of the flaws it scores.[3]

CISA assesses it as not automatable: each attack takes some work.

CISA doesn’t say who was attacked, or how.

Fix

CISA’s required action: “Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.”[1]

  1. Check whether you use it.Vitejs is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
  2. Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 12 Feb 2026 to fix it.
  3. If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.

You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.

Timeline

DateEvent
The flaw is made public in the National Vulnerability Database, with a severity score of 7.5.[2]
CISA adds it to its catalog of flaws known to be used in attacks.[1]
CISA’s deadline for US government agencies to fix it.[1]
FIRST puts the odds of it being used in attacks in the next 30 days at 75%.[3]

See also

Other information exposure flaws

  • CVE-2025-68686, Fortinet FortiOS: exposure of sensitive information to an unauthorized actor ·
  • CVE-2026-20133, Cisco Catalyst SD-WAN Manager: exposure of sensitive information to an unauthorized actor ·
  • CVE-2026-20805, Microsoft Windows: information disclosure ·
  • CVE-2021-41277, Metabase: geoJSON API local file inclusion ·
  • CVE-2024-24919, Check Point Quantum Security Gateways: information disclosure ·

Added the same day

  • CVE-2025-68645, Synacor Zimbra Collaboration Suite (ZCS): PHP remote file inclusion ·
  • CVE-2025-54313, Prettier eslint-config-prettier: embedded malicious code ·
  • CVE-2025-34026, Versa Concerto: improper authentication ·

References

  1. ^ Cybersecurity and Infrastructure Security Agency. “Vite Vitejs Improper Access Control Vulnerability”. Known Exploited Vulnerabilities Catalog, added 22 Jan 2026.
  2. ^ National Institute of Standards and Technology. “CVE-2025-31125 Detail”. National Vulnerability Database, published 31 Mar 2025.
  3. ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.749, percentile 99.5, 31 Oct 2026.
  4. CVE Program. “CVE-2025-31125”. The official CVE record.

This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.