At a glance
Actively exploited in the wild — prioritise confirming exposure.
Medium rather than High: exposure is scored at a default because we cannot see your systems or suppliers. If you run or depend on Vite Vitejs, treat it as High.
Briefing
- Do not treat uncorroborated claims as confirmed breaches.
Questions to ask IT
- Do we run Vite Vitejs, and which versions?
- Is any of it reachable from the internet?
- Have we checked whether it has already been used against us?
- If it is not yet patched, what mitigation is in place, and will the fix be done by 16 Nov?
Next steps
- Confirm exposure, mitigation status and any service interruption risk.
Vulnerability facts
Full CVE detail CVE-2025-31125- 5.3 · MediumExploitable over the network without any account, under specific conditions, but only if a user takes an action, such as opening a file or link. High impact on confidentiality.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
- Listed: attacks using it have been seen (on the catalogue since )
- Elevated attack likelihood (~74.9% in 30 days)
No technical write-up beyond these facts and the summary below yet.
Next steps
- Confirm whether affected products/versions are present and prioritise patching or mitigations
Summary
- Vite Vitejs contains an improper access control vulnerability that exposes content of non-allowed files using?
- CVE-2025-31125 is listed in known-exploited catalogue (exploitation in the wild)
- Authoritative catalogues report active exploitation of this vulnerability.
Why this matters in the UK
- Known-exploited catalogue reports exploitation in the wild
Products and services involved
- Vite Vitejs82% match confidence · CVE-2025-31125
Part of Vite Vitejs and Versa Concerto vulnerabilities
Pulse
Last checked 26m ago · Next recheck 10 Nov 2026, 02:37 UK time · 3 quiet checks collapsed
in the next 30 days first recorded at 74.9% (elevated likelihood signal, not confirmed exploitation). Suggested changed to 7d.
Elevated — confirm exposure; this is a probability signal, not confirmed exploitation.
2 quiet checks hidden.
Sources
Vite Vitejs Improper Access Control Vulnerability
How we know
Statements extracted from sources. Higher confidence means stronger corroboration.
- ConfirmedHeadline90% confidence
Vite Vitejs Improper Access Control Vulnerability
- ConfirmedSummary fact75% confidence
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. Affects Vite Vitejs. Known ransomware campaign use: Unknown.
- ConfirmedCVE identifier95% confidence
Event involves CVE-2025-31125
- ConfirmedKnown-exploited catalogue98% confidence
CVE-2025-31125 is listed in known-exploited catalogue (exploitation in the wild)

