CVE-2026-0545

Status: ModifiedCritical (9.8)—

In mlflow/mlflow, the FastAPI job endpoints under `/ajax-api/3.0/jobs/*` are not protected by authentication or authorization when the `basic-auth` app is enabled. This vulnerability affects the latest version of the repository. If job execution is enabled (`MLFLOW_SERVER_ENABLE_JOB_EXECUTION=true`) and any job function is allowlisted, any network client can submit, read, search, and cancel jobs without credentials, bypassing basic-auth entirely. This can lead to unauthenticated remote code execution if allowed jobs perform privileged actions such as shell execution or filesystem changes. Even if jobs are deemed safe, this still constitutes an authentication bypass, potentially resulting in job spam, denial of service (DoS), or data exposure in job results.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base score: 9.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 4.39%
Percentile among all scored CVEs: 91
Score date: 10/5/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1190 Exploit Public-Facing Applicationinitial access95 %
Primary impactT1078 Valid Accountsstealth · persistence · privilege escalation · initial access90 %
Secondary impactT1059 Command and Scripting Interpreterexecution85 %
Secondary impactT1499.004 Application or System Exploitationimpact75 %

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N indica acceso remoto sin privilegios ni interacción (T1190). El bypass de autenticación en endpoints FastAPI no protegidos permite ejecución remota no autenticada (T1078), ejecución de código mediante jobs (T1059) y DoS mediante spam de jobs (T1499.004).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account Management Filter Network Traffic Application Developer Guidance Active Directory Configuration Vulnerability Scanning User Training

Affected technologies (1)

Lfprojects — Mlflow

CWEs

CWE-306
CWE-306

References

Raw JSON (NVD)

Show

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