CVE-2026-91319 Oracle Corporation CVE debrief

Who should care

Oracle JDeveloper administrators, security teams, and IT personnel responsible for vulnerability management and patching should assess exposure, prioritize patching, and monitor for suspicious activity. This includes teams managing Oracle JDeveloper deployments, as well as security operations centers (SOCs) and incident response teams that may need to review network access controls and compensating controls.

Why it matters

CVE-2026-91319 is a medium-severity vulnerability in Oracle JDeveloper that allows unauthenticated attackers to potentially modify data. Oracle JDeveloper administrators and security teams should assess exposure, prioritize patching, and monitor for suspicious activity.

• Potential unauthorized data modification
• Need for vulnerability assessment and patching
• Monitoring for suspicious activity
• Review of network access controls

Technical summary

The vulnerability affects Oracle JDeveloper versions 12.2.1.4.0 and 14.1.2.0.0, allowing unauthenticated attackers with network access via HTTP to compromise the product. Successful attacks can result in unauthorized creation, deletion, or modification access to critical data or all Oracle JDeveloper accessible data. The CVSS 3.1 Base Score is 5.9, indicating a medium-severity vulnerability with significant integrity impacts. Oracle JDeveloper administrators and security teams should prioritize patching and vulnerability assessment.

Defensive priority

Medium-priority patching and vulnerability assessment recommended

Recommended defensive actions

• Assess exposure of Oracle JDeveloper instances
• Verify and apply patches from Oracle
• Monitor for suspicious activity
• Review network access controls
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• 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

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but additional information on affected versions and remediation is limited. Further verification is needed to confirm the scope of affected deployments and to validate vendor guidance. Defenders should review official advisories and track exceptions for retesting remediated assets.

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.