{"id":"CVE-2026-116692","revision":null,"records":[{"revision":"152451278de74a109c7f2c4588ab2a1e","observedAt":"2026-10-27T21:45:55.39+00:00","statement":{"source":"cve-program","id":"CVE-2026-116692","aliases":[],"title":"MLflow: Remote code execution on unauthenticated MLflow servers via third-party scorer deserialization importing caller-placed artifact modules","description":"MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. From 3.12.0rc0 until 3.17.0, third-party scorer deserialization in mlflow/genai/scorers/base.py accepts request-selected descendants of THIRD_PARTY_SCORER_ALLOWED_MODULES rather than requiring an exact allowed module. A caller can use MLflow artifact endpoints to place a Python module beneath a writable allowed package and submit its module and class through /ajax-api/3.0/mlflow/scorer/invoke. Scorer.model_validate_json() imports the module and constructs the class before trace processing. Authentication-disabled deployments permit this code execution without credentials, while basic-auth deployments require a principal capable of creating an experiment and run and uploading artifacts. In either configuration, the allowed scorer package must be writable by the server process. This issue is fixed in version 3.17.0.","state":0,"publishedAt":"2026-10-27T20:03:49.661+00:00","modifiedAt":"2026-10-27T20:03:49.661+00:00","affected":[{"ecosystem":"Vendor product","name":"mlflow","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"mlflow\",\n                    \"product\": \"mlflow\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 3.12.0rc0, < 3.17.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://github.com/mlflow/mlflow/security/advisories/GHSA-26p8-2jq9-3vq9","https://github.com/mlflow/mlflow/pull/25906","https://github.com/mlflow/mlflow/commit/a732443e695c3c677680c54320efc394c81654ab","https://github.com/mlflow/mlflow/releases/tag/v3.17.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116692","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-116692","identifiers":["CVE-2026-116692"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-31T19:04:56.1330465+00:00","complete":true,"records":1766,"lastAttemptAt":"2026-10-31T19:04:56.1330465+00:00","lastSuccessAt":"2026-10-31T19:04:56.2887005+00:00","error":null,"lastVerifiedAt":"2026-10-31T19:04:56.2887022+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-9266d7b009bf9c4a0ccdcb5cbdea7f905cb3c4d92fd3b41581ece16b2cfdc4e7-c71479685b1713e2042fb88ec15880046552dd37e95ce2a15e200aae212a9461","complete":true,"records":417592,"lastAttemptAt":"2026-10-31T19:04:55.457276+00:00","lastSuccessAt":"2026-10-31T19:04:55.3095682+00:00","error":null,"lastVerifiedAt":"2026-10-31T19:04:55.457276+00:00","snapshotPublishedAt":"2026-10-31T18:19:52+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-e7b141564b3340aebe07d7339b385d4a","complete":true,"records":13567,"lastAttemptAt":"2026-10-31T19:05:27.0056627+00:00","lastSuccessAt":"2026-10-31T19:05:27.002+00:00","error":null,"lastVerifiedAt":"2026-10-31T19:05:27.002+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13637,"expectedIdentifiers":13637,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-31T19:04:56.1330465+00:00","complete":true,"records":1094,"lastAttemptAt":"2026-10-31T19:04:56.1330465+00:00","lastSuccessAt":"2026-10-31T19:04:56.2895472+00:00","error":null,"lastVerifiedAt":"2026-10-31T19:04:56.289548+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-a558c2e000674838b5341fe81ce273de","complete":false,"records":13580,"lastAttemptAt":"2026-10-31T19:05:21.5191534+00:00","lastSuccessAt":"2026-10-31T19:05:21.516+00:00","error":null,"lastVerifiedAt":"2026-10-31T19:05:21.516+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13636,"expectedIdentifiers":13637,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-21dcd6662970dfea02e4ea60ee637115e8d92664947484d2b9276b3f6568a84f","complete":true,"records":9815,"lastAttemptAt":"2026-10-31T19:04:56.081418+00:00","lastSuccessAt":"2026-10-30T23:47:34.1817587+00:00","error":null,"lastVerifiedAt":"2026-10-31T19:04:56.081418+00:00","snapshotPublishedAt":"2026-10-30T23:33:17+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-2de9ccc5290f060c7aa63f89c25dd76f655a64ba1aba7c05c97fa3bee4f09899","complete":true,"records":1967,"lastAttemptAt":"2026-10-31T19:04:55.5925297+00:00","lastSuccessAt":"2026-10-28T20:55:34.2982937+00:00","error":null,"lastVerifiedAt":"2026-10-31T19:04:55.5925297+00:00","snapshotPublishedAt":"2026-10-28T20:03:08+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-f95f76cd406ae5bae3de632ad37fd2d5160b44f5e6b51748ac6f8f0c0c88e72b","complete":true,"records":3028,"lastAttemptAt":"2026-10-31T19:04:56.0947894+00:00","lastSuccessAt":"2026-10-30T23:47:38.4914494+00:00","error":null,"lastVerifiedAt":"2026-10-31T19:04:56.0947894+00:00","snapshotPublishedAt":"2026-10-30T23:18:12+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-712291bb5a0ee4f1ca7325e317f98ff05e9ab8d14f863abf00a323d9e6d8331e","complete":true,"records":230994,"lastAttemptAt":"2026-10-31T19:04:55.7662022+00:00","lastSuccessAt":"2026-10-31T17:06:47.8999408+00:00","error":null,"lastVerifiedAt":"2026-10-31T19:04:55.7662022+00:00","snapshotPublishedAt":"2026-10-31T16:33:38+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}