{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-2635", "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "state": "PUBLISHED", "assignerShortName": "zdi", "dateReserved": "2026-02-17T18:43:46.629Z", "datePublished": "2026-02-20T22:25:03.494Z", "dateUpdated": "2026-07-06T12:04:53.172Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "shortName": "zdi", "dateUpdated": "2026-02-20T22:25:03.494Z" }, "title": "MLflow Use of Default Password Authentication Bypass Vulnerability", "descriptions": [ { "lang": "en", "value": "MLflow Use of Default Password Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of MLflow. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the basic_auth.ini file. The file contains hard-coded default credentials. An attacker can leverage this vulnerability to bypass authentication and execute arbitrary code in the context of the administrator. Was ZDI-CAN-28256." } ], "affected": [ { "vendor": "MLflow", "product": "MLflow", "versions": [ { "version": "3.4.0", "status": "affected" } ], "defaultStatus": "unknown" } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-1393", "description": "CWE-1393: Use of Default Password", "type": "CWE" } ] } ], "references": [ { "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-111/", "name": "ZDI-26-111", "tags": [ "x_research-advisory" ] }, { "url": "https://github.com/mlflow/mlflow/pull/19260", "name": "vendor-provided URL", "tags": [ "vendor-advisory" ] } ], "dateAssigned": "2026-02-17T18:43:46.678Z", "datePublic": "2026-02-19T14:15:20.254Z", "source": { "lang": "en", "value": "Peter Girnus (@gothburz) of Trend Zero Day Initiative" }, "metrics": [ { "format": "CVSS", "cvssV3_0": { "version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL" } } ] }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-02-26T00:00:00+00:00", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-2635" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-27T04:55:48.854Z" } }, { "affected": [ { "cpes": [ "cpe:/a:redhat:openshift_ai" ], "defaultStatus": "unaffected", "product": "Red Hat OpenShift AI (RHOAI)", "vendor": "Red Hat" } ], "datePublic": "2026-02-20T22:25:03.494Z", "descriptions": [ { "lang": "en", "value": "A flaw was found in MLflow. A remote attacker can exploit this vulnerability by leveraging hard-coded default credentials present in the basic_auth.ini file. This allows the attacker to bypass authentication and execute arbitrary code in the context of the mlflow python application." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-798", "description": "Use of Hard-coded Credentials", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-2635" }, { "name": "RHBZ#2441514", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2441514" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2635.json" } ], "timeline": [ { "lang": "en", "time": "2026-02-20T23:01:16.144Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-02-20T22:25:03.494Z", "value": "Made public." } ], "title": "mlflow: MLflow Use of Default Password Authentication Bypass Vulnerability", "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-07-06T12:04:53.172Z" } } ] } }