CVE Explorer
CVE-2026-4137
In mlflow/mlflow versions prior to 3.11.0, the `get_or_create_nfs_tmp_dir()` function in `mlflow/utils/file_utils.py` creates temporary directories with world-writable permissions (0o777), and the `_create_model_downloading_tmp_dir()` function in `mlflow/pyfunc/__init__.py` creates directories with group-writable permissions (0o770). These insecure permissions allow local attackers to tamper with model artifacts, such as cloudpickle-serialized Python objects, and achieve arbitrary code execution
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"mlflow/mlflow","vendor":"mlflow","versions":[{"lessThan":"3.11.0","status":"affected","version":"unspecified","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a7708ee2f705704c2c703a507bdbc404a8f14cf7a7cf88c441a0f24bbbe12dfa · sha256:f5c08cb9ee2a6cb2… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"metric_type":"cvssV3_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a7708ee2f705704c2c703a507bdbc404a8f14cf7a7cf88c441a0f24bbbe12dfa · sha256:f5c08cb9ee2a6cb2… · /containers/cna/metrics/0/cvssV3_0
CWE assertions
1 source assertion{"cweId":"CWE-378","description":"CWE-378 Creation of Temporary File With Insecure Permissions","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:a7708ee2f705704c2c703a507bdbc404a8f14cf7a7cf88c441a0f24bbbe12dfa · sha256:f5c08cb9ee2a6cb2… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"url":"https://github.com/mlflow/mlflow/commit/1dcbb0c2fbd1f446c328830e601ca13a28219b8a"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a7708ee2f705704c2c703a507bdbc404a8f14cf7a7cf88c441a0f24bbbe12dfa · sha256:f5c08cb9ee2a6cb2… · /containers/cna/references/1
{"url":"https://huntr.com/bounties/648dc30b-76c7-4433-86b8-f43d926fd8d6"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a7708ee2f705704c2c703a507bdbc404a8f14cf7a7cf88c441a0f24bbbe12dfa · sha256:f5c08cb9ee2a6cb2… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://huntr.com/bounties/648dc30b-76c7-4433-86b8-f43d926fd8d6"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a7708ee2f705704c2c703a507bdbc404a8f14cf7a7cf88c441a0f24bbbe12dfa · sha256:f5c08cb9ee2a6cb2… · /containers/adp/0/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.