CVE-2026-91360 Oracle Corporation CVE debrief

Who should care

Defenders responsible for Siebel CRM Cloud Applications, particularly those with low-privileged access, should assess exposure and prioritize patching. Roles responsible for Siebel CRM Cloud Applications, especially those managing low-privileged access points and HTTP network access, should review and apply patches from Oracle as available. Security teams and vulnerability management teams should also prioritize this vulnerability due to its potential for

Why it matters

Defenders should care about CVE-2026-91360 because it allows low-privileged attackers to compromise Siebel CRM Cloud Applications, potentially leading to unauthorized data access. Roles responsible for Siebel CRM Cloud Applications, particularly those with low-privileged access, should assess exposure and prioritize patching. The vulnerability's medium severity indicates a need for prompt defensive actions.

• Potential unauthorized access to critical data
• Possible complete access to all Siebel CRM Cloud Applications accessible data
• Requires verification of affected versions and remediation from Oracle

Technical summary

The vulnerability in Siebel CRM Cloud Applications, tracked as CVE-2026-91360, allows low-privileged attackers with network access via HTTP to compromise the application. Successful attacks can result in unauthorized access to critical data or complete access to all Siebel CRM Cloud Applications accessible data. The CVSS 3.1 Base Score is 6.5, indicating a medium severity. The vulnerability affects Siebel CRM Cloud Applications versions 22.3-26.9 and has been assessed by Oracle as a medium severity vulnerability. Defenders should focus on validating affected scope, applying patches, and monitoring for suspicious activity.

Defensive priority

Medium-priority defensive actions are recommended to address this vulnerability.

Recommended defensive actions

• Review and apply patches from Oracle as available
• Restrict network access to Siebel CRM Cloud Applications
• Monitor for suspicious activity
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but additional information on affected versions and remediation is needed. The vulnerability is tracked as CVE-2026-91360 and has a CVSS 3.1 Base Score of 6.5, indicating a medium severity. Oracle has provided an official security alert for this vulnerability. Further verification of affected versions and remediation guidance from Oracle is required.

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.