CVE-2026-2635
HIGHDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Exploit Intelligence
Moderate risk: more likely to be exploited than 59% of all known CVEs.
References
Related Vulnerabilities
Other CWE-1393 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2023-45249 | Critical | 9.8 | 53% | KEV | Fix |
| CVE-2024-29021 | Critical | 9.0 | 20% | - | - |
| CVE-2025-26793 | Unscored | - | 2.3% | - | - |
| CVE-2024-48987 | Medium | 6.6 | 1.0% | - | Fix |
| CVE-2023-25131 | Critical | 9.4 | 1.0% | - | - |
| CVE-2024-43659 | High | 7.2 | 0.8% | - | - |
Common questions
How do I fix CVE-2026-2635?
No published fix for CVE-2026-2635 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-2635 being actively exploited?
Not that we know of. CVE-2026-2635 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.97% is the estimated probability that it will be exploited in the next 30 days. That is higher than 59% of all scored CVEs.
How severe is CVE-2026-2635?
CVE-2026-2635 has a CVSS v3 base score of 7.3, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
Embed a live status badge for CVE-2026-2635
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.