CVE-2026-101378 Oracle Corporation CVE debrief

Who should care

Defenders responsible for Oracle REST Data Services deployments, especially those with low-privileged network access, should assess exposure and prioritize patching or mitigation efforts.

Why it matters

CVE-2026-101378 is a medium-severity vulnerability in Oracle REST Data Services that allows low-privileged attackers with network access to potentially modify data. Defenders should verify exposure, prioritize patching, and monitor for unauthorized changes.

• Potential unauthorized data modifications by low-privileged attackers
• Need to verify exposure of Oracle REST Data Services in the environment
• Priority on applying patches or updates from Oracle
• Monitoring for suspicious activity or unauthorized changes

Technical summary

The vulnerability in Oracle REST Data Services (component: ADP) is easily exploitable and allows a low-privileged attacker with network access via HTTP to compromise the service. Successful attacks can result in unauthorized update, insert, or delete access to some of Oracle REST Data Services accessible data. The CVSS 3.1 Base Score is 4.3 (Integrity impacts). Oracle REST Data Services versions 24.2.0 through 26.1.0 are affected, and defenders should prioritize verifying exposure of Oracle REST Data Services within their environments.

Defensive priority

Defenders should prioritize verifying exposure of Oracle REST Data Services within their environments, especially if low-privileged network access is possible. They should also monitor for unauthorized data modifications.

Recommended defensive actions

• Verify if Oracle REST Data Services is deployed in your environment, especially versions 24.2.0 through 26.1.0.
• Check for and apply any available patches or updates from Oracle.
• Monitor Oracle REST Data Services logs for unauthorized data modifications.
• Restrict network access to Oracle REST Data Services to only necessary personnel and systems.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• 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 impact, and affected versions. Oracle's advisory (CPUOct2026) likely contains additional information for patching and mitigation.

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.