CVE-2026-91363 Oracle Corporation CVE debrief

Who should care

Defenders responsible for Oracle Siebel CRM Cloud Applications, particularly those with versions 22.3-26.9, should assess exposure and potential data access risks. They should prioritize verifying exposure and assessing potential data access risks. Defenders should also review compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

CVE-2026-91363 is a low-severity vulnerability in Oracle Siebel CRM Cloud Applications that allows unauthenticated attackers to gain unauthorized read access to a subset of accessible data. Defenders should prioritize verifying exposure and assessing potential data access risks.

• Verify exposure of Siebel CRM Cloud Applications to unauthorized read access
• Assess potential data access risks and implement compensating controls
• Monitor for unauthorized read access attempts

Technical summary

CVE-2026-91363 is a low-severity vulnerability in Oracle Siebel CRM Cloud Applications, allowing unauthenticated attackers with network access via HTTP to compromise the application and gain unauthorized read access to a subset of accessible data. The vulnerability affects versions 22.3-26.9 of the application. Defenders should prioritize verifying exposure and assessing potential data access risks. The CVE record and NVD entry provide limited information about the vulnerability, with Oracle Siebel CRM Cloud Applications versions 22.3-26.9 potentially affected.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential data access risks.

Recommended defensive actions

• Verify Siebel CRM Cloud Applications version and check for exposure
• Assess potential data access risks and implement compensating controls
• Monitor for unauthorized read access attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• 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 CVE record and NVD entry provide limited information about the vulnerability, with Oracle Siebel CRM Cloud Applications versions 22.3-26.9 potentially affected. Defenders should verify exposure and assess potential data access risks. The vulnerability allows unauthenticated attackers with network access via HTTP to compromise the application and gain unauthorized read access to a subset of accessible data.

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.