Auth bypass in Vatesfr Xen-Orchestra
CVE-2026-113610
Xen Orchestra before 6.9.0 contains an authorization bypass vulnerability in the xo-server user.set API method that allows low-privileged authenticated users to modify other users' preferences by supplying an arbitrary target user id. Attackers can delete the preferences.otp TOTP secret to disable two-factor authentication, corrupt it to block logins, or overwrite stored xsCredentials and sshKeys.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/vatesfr/xen-orchestra/security/advisories/GHSA-mc4m-hc98-rhmv (vendor-advisory)
- github.com/vatesfr/xen-orchestra/commit/3dbf8738f1e682b96ade2074dc84bee02a0c2d48 (patch)
- github.com/vatesfr/xen-orchestra/blob/f187b7931988e3e5c9ccd58abe730d6b006cc246/… (technical-description)
- www.vulncheck.com/advisories/xen-orchestra-before-6.9.0-authorization-bypass-vi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-113610?
- CVE-2026-113610 is a medium-severity vulnerability in Vatesfr Xen-Orchestra, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-10-20.
- How severe is CVE-2026-113610?
- Medium severity. CVSS v3 base score is 5.4 out of 10.