CVE Explorer
CVE-2026-33866
MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint used to download saved model artifacts. Due to missing access‑control validation, a user without permissions to a given experiment can directly query this endpoint and retrieve model artifacts they are not authorized to access.
This issue affects MLflow version through 3.10.1
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://github.com/","defaultStatus":"unaffected","packageName":"mlflow","product":"Mlflow","repo":"https://github.com/mlflow/","vendor":"Mlflow","versions":[{"lessThanOrEqual":"3.10.1","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:7b56980434a20441dd7aeb00106c5ce0fe917e803ef12be56d21d28568fdd4eb · sha256:82d268dc8507b74c… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NON…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:7b56980434a20441dd7aeb00106c5ce0fe917e803ef12be56d21d28568fdd4eb · sha256:82d268dc8507b74c… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-862","description":"CWE-862 Missing Authorization","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:7b56980434a20441dd7aeb00106c5ce0fe917e803ef12be56d21d28568fdd4eb · sha256:82d268dc8507b74c… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"tags":["exploit","technical-description"],"url":"https://afine.com/blogs/attacking-mlflow-how-ml-artifacts-become-attack-vectors"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:7b56980434a20441dd7aeb00106c5ce0fe917e803ef12be56d21d28568fdd4eb · sha256:82d268dc8507b74c… · /containers/cna/references/2
{"tags":["third-party-advisory"],"url":"https://cert.pl/en/posts/2026/04/CVE-2026-33865/"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:7b56980434a20441dd7aeb00106c5ce0fe917e803ef12be56d21d28568fdd4eb · sha256:82d268dc8507b74c… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/mlflow/mlflow/pull/21708"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:7b56980434a20441dd7aeb00106c5ce0fe917e803ef12be56d21d28568fdd4eb · sha256:82d268dc8507b74c… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.