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Vulnerabilities

Vulnerability · CVE-2026-2635

MLflow Use of Default Password Authentication Bypass Vulnerability.

Published Feb 20, 2026 · catalog updated Jul 15, 2026 · MLflow Use of Default

Check if you run it

No confirmed exploitation is on record for CVE-2026-2635. EPSS is 1.24%. Act only if a listed version of MLflow Use of Default is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (MLflow Use of Default).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.24%
Remediation
Advisory link
Affected products
See sources for product scope

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. The 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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-2635

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-2635. EPSS is 1.24%. Act only if a listed version of MLflow Use of Default is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1393; CWE-798: Use of Hard-coded Credentials. EPSS 1.24%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 20, 2026 · NIST NVD

    Detected

    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. The specific flaw exists within the basic_auth.ini file. The file contains hard-coded default credentials. An attacker can leverage this vulnerability to bypass auth

  2. Jul 15, 2026 · NIST NVD

    Updated

    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. The specific flaw exists within the basic_auth.ini file. The file contains hard-coded default credentials. An attacker can leverage this vulnerability to bypass auth

Sources

  • CVE.orgVulnerability recordCVE-2026-2635

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-2635

    30-day exploitation probability 1.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-2635

    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. The specific flaw exists within the basic_au

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.