Medium 5.4Published Oct 20, 2026

CVE-2026-113610Xen Orchestra before 6.9.0 Authorization Bypass via user.set API

Updated under an hour ago (Oct 28, 2026, 6:00 PM ET)

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It affects vatesfr xen-orchestra. Add what you run to find out whether that includes you.

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Every CVE for vatesfr xen-orchestra

Exploited in the last 30 days

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.

CVSS: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 20, 2026
First seen by InfoSec Signals: Oct 20, 2026

Affected products

Affected products

vatesfr xen-orchestra vatesfr:xen_orchestra (from the name)	before 6.9.0	CNA record

References

References

https://github.com/vatesfr/xen-orchestra/security/advisories/GHSA-mc4m-hc98-rhmv	vendor-advisory
https://github.com/vatesfr/xen-orchestra/commit/3dbf8738f1e682b96ade2074dc84bee02a0c2d48	patch
https://github.com/vatesfr/xen-orchestra/blob/f187b7931988e3e5c9ccd58abe730d6b006cc246/packages/xo-server/src/api/user.mjs#L73-L93	technical-description
https://www.vulncheck.com/advisories/xen-orchestra-before-6.9.0-authorization-bypass-via-user-set-api	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.