CVE-2026-91362 Oracle Corporation CVE debrief

Who should care

Defenders responsible for Siebel CRM Cloud Applications versions 22.3-26.9 should assess exposure and prioritize patching. This includes verifying exposure, applying patches or updates provided by Oracle, and monitoring for unauthorized access attempts. Security teams and vulnerability management teams should review the CVE record and NVD detail page for additional information.

Why it matters

CVE-2026-91362 is a medium-severity vulnerability in Oracle Siebel CRM Cloud Applications, allowing unauthenticated attackers to gain unauthorized read access to a subset of accessible data. Defenders responsible for Siebel CRM Cloud Applications versions 22.3-26.9 should assess exposure and prioritize patching.

• Verify exposure of Siebel CRM Cloud Applications versions 22.3-26.9
• Apply patches or updates to prevent unauthorized read access
• Monitor for unauthorized access attempts

Technical summary

CVE-2026-91362 is a medium-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 Siebel CRM Cloud Applications versions 22.3-26.9. Defenders should prioritize verifying exposure and applying patches or updates provided by Oracle to prevent unauthorized read access. The CVE record and NVD detail page provide limited information about the vulnerability.

Defensive priority

Defenders should prioritize verifying exposure and applying patches for Siebel CRM Cloud Applications versions 22.3-26.9.

Recommended defensive actions

• Verify Siebel CRM Cloud Applications versions 22.3-26.9 for exposure
• Apply patches or updates provided by Oracle
• Monitor for unauthorized 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 detail page provide limited information about the vulnerability, with the primary source being the Oracle security alert. The vulnerability affects Siebel CRM Cloud Applications versions 22.3-26.9 and allows unauthenticated attackers to gain unauthorized read access to a subset of accessible data. Defenders should verify exposure and apply patches or updates provided by Oracle. The CVE record was published on 2026-10-20T22:20:39.000Z and has not been modified since then.

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.