CVE-2026-91322 Oracle Corporation CVE debrief

Who should care

Defenders responsible for Oracle JDeveloper installations, especially those using versions 12.2.1.4.0 and 14.1.2.0.0, should assess exposure and prioritize verification and patching.

Why it matters

CVE-2026-91322 is a low-severity vulnerability in Oracle JDeveloper that allows low-privileged attackers to potentially access data. Defenders should assess exposure, prioritize verification and patching, and monitor for unauthorized access.

• Potential unauthorized read access to a subset of Oracle JDeveloper accessible data
• Need to verify Oracle JDeveloper installations and versions in use
• Prioritize patching for versions 12.2.1.4.0 and 14.1.2.0.0
• Monitor for unauthorized access attempts on Oracle JDeveloper

Technical summary

The vulnerability in Oracle JDeveloper, a component of Oracle Fusion Middleware, allows low-privileged attackers with logon access to compromise Oracle JDeveloper, potentially leading to unauthorized read access to a subset of accessible data. The CVSS 3.1 Base Score is 3.3, indicating a low severity. The vulnerability is easily exploitable and affects Oracle JDeveloper versions 12.2.1.4.0 and 14.1.2.0.0. Defenders should assess exposure, prioritize verification of Oracle JDeveloper installations, and monitor for unauthorized access attempts.

Defensive priority

Assess exposure and prioritize verification of Oracle JDeveloper installations, especially versions 12.2.1.4.0 and 14.1.2.0.0.

Recommended defensive actions

• Inventory Oracle JDeveloper installations to identify potential exposure
• Verify if versions 12.2.1.4.0 or 14.1.2.0.0 are in use and prioritize patching
• Monitor for unauthorized access attempts on Oracle JDeveloper
• 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 details on the vulnerability, its CVSS score, and affected versions. Oracle's security alert documentation is referenced for further information. The vulnerability affects Oracle JDeveloper versions 12.2.1.4.0 and 14.1.2.0.0. Defenders should verify Oracle JDeveloper installations and versions in use, prioritize patching for affected versions, and monitor for unauthorized access attempts on Oracle JDeveloper. The CVE record was published on 2026-10-20T22:20:34.213Z and has not been modified since.

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.