CVE-2026-113610 vatesfr CVE debrief

Who should care

System administrators and security teams responsible for Xen Orchestra deployments, especially those with low-privileged user accounts, should assess their exposure and prioritize patching or mitigation.

Why it matters

CVE-2026-113610 is a medium-severity authorization bypass vulnerability in Xen Orchestra before 6.9.0. Low-privileged authenticated users can modify other users' preferences, potentially leading to security issues. Defenders should prioritize patching, restrict API access, and monitor for suspicious activity.

• Potential disabling of two-factor authentication for targeted users
• Corruption of login credentials, potentially blocking user access
• Overwriting of stored xsCredentials and sshKeys, leading to potential unauthorized access
• Verification of user preference modifications to detect potential exploitation attempts

Technical summary

The vulnerability exists in the user.set API method of Xen Orchestra, allowing low-privileged authenticated users to modify other users' preferences by supplying an arbitrary target user ID. This could lead to security issues such as disabling two-factor authentication or corrupting login credentials. The vulnerability is confirmed in Xen Orchestra versions before 6.9.0. Defenders should prioritize patching or mitigating this vulnerability, especially in environments where low-privileged users have access to the Xen Orchestra API. System administrators and security teams should assess their exposure and prioritize patching or mitigation.

Defensive priority

Defenders should prioritize patching or mitigating this vulnerability, especially in environments where low-privileged users have access to the Xen Orchestra API.

Recommended defensive actions

• Patch Xen Orchestra to version 6.9.0 or later
• Restrict access to the user.set API method
• Monitor for suspicious activity on low-privileged user accounts
• Consider implementing additional security measures for two-factor authentication and credential management
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The vulnerability is confirmed in Xen Orchestra versions before 6.9.0. The CVE Program and NVD provide official records, while the vendor and supplemental sources offer additional details on the vulnerability and potential mitigations.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.