CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Called exploited 84 days after disclosure.
Measured from the CVE publication date to the earliest of 1 KEV catalogue that list it.
The life of this vulnerability
- CVE published
- First KEV listing3mo
- Last sighting28d
Gaps are compressed to equal steps. The elapsed time is printed under each.
Which catalogues call it exploited
- CISA KEVUS federaldoes not list it
- EUVDENISA, European Uniondoes not list it
- VulnCheck KEVcommercial researchlisted Aug 7, 2026
- CIRCLaggregator, mirrors the abovelisted Aug 7, 2026, not counted
This rests on a single catalogue. No second catalogue corroborates the claim that it is being exploited. CIRCL is an aggregator and is not counted.
Public exploitation evidence
- reported exploitationdashboard.shadowserver.org/statistics/honeypot/vulnerability
- reported exploitationdashboard.shadowserver.org/statistics/honeypot/vulnerability
- reported exploitationdashboard.shadowserver.org/statistics/honeypot/vulnerability
- reported exploitationdashboard.shadowserver.org/statistics/honeypot/vulnerability
- reported exploitationdashboard.shadowserver.org/statistics/honeypot/vulnerability
- reported exploitationdashboard.shadowserver.org/statistics/honeypot/vulnerability
21 public reports collected from VulnCheck and CIRCL, first on Aug 7, 2026. Each links to its original source. We have not verified them.
Description
A vulnerability in mlflow/mlflow versions 3.9.0 and earlier allows unauthenticated access to certain FastAPI routes when the server is started with authentication enabled (`--app-name basic-auth`) and served via uvicorn (ASGI). The FastAPI permission middleware only enforces authentication on `/gateway/` routes, leaving other routes such as the Job API (`/ajax-api/3.0/jobs/*`) and the OpenTelemetry trace ingestion API (`/v1/traces`) unprotected. This allows unauthenticated remote attackers to submit jobs, read job results, cancel running jobs, and inject arbitrary trace data into experiments. The issue arises from an architectural mismatch between Flask and FastAPI authentication mechanisms,