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.
Does this matter?
Lower severity and a low EPSS score (0.43%). Track it; it rarely justifies an emergency change on its own.
Description
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 4.0
- 5.3 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.43% probability · 37th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-639
- Source
- disclosure@vulncheck.com
EPSS moved from 0.4% on 21 October 2026 to 0.4% on 26 October 2026.
References
- https://github.com/vatesfr/xen-orchestra/blob/f187b7931988e3e5c9ccd58abe730d6b006cc246/packages/xo-server/src/api/user.mjs#L73-L93
- https://github.com/vatesfr/xen-orchestra/commit/3dbf8738f1e682b96ade2074dc84bee02a0c2d48
- https://github.com/vatesfr/xen-orchestra/security/advisories/GHSA-mc4m-hc98-rhmv
- https://www.vulncheck.com/advisories/xen-orchestra-before-6.9.0-authorization-bypass-via-user-set-api
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.