CVE-2026-0545
Unauthenticated access to MLflow FastAPI job endpoints enables auth bypass and possible RCE
Is CVE-2026-0545 being exploited?
Not confirmed. CVE-2026-0545 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 4.4% probability of exploitation in the next 30 days.
How severe is CVE-2026-0545?
CVE-2026-0545 is rated Critical with a CVSS score of 9.1. 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-2026-0545?
Yes. A fix has been recorded for CVE-2026-0545. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-0545 affect?
CVE-2026-0545 affects MLflow, MLflow FastAPI endpoints /ajax-api/3.0/jobs/*. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-0545?
Patch when released; enforce auth on job endpoints; disable job execution until fixed
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated actors can submit/read/search/cancel jobs; could trigger shell, file changes, DoS, or data exposure
Patch when possible
- affected<= latest
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.