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PatchSiren cyber security CVE debrief

CVE-2026-35306 Oracle Corporation CVE debrief

A critical vulnerability was discovered in Oracle Coherence, a product of Oracle Fusion Middleware. The vulnerability is easily exploitable and allows unauthenticated attackers with network access via HTTP to compromise the system. Successful attacks can result in unauthorized access to critical data or complete access to all Oracle Coherence accessible data, as well as unauthorized update, insert or delete access to some of Oracle Coherence accessible data. The vulnerability affects Oracle Coherence version 15.1.1.0.0 and has a CVSS 3.1 Base Score of 9.3.

Vendor
Oracle Corporation
Product
Oracle Coherence
CVSS
CRITICAL 9.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-17
Advisory published
2026-06-17
Advisory updated
2026-06-17

Who should care

Organizations using Oracle Coherence version 15.1.1.0.0 should prioritize patching this vulnerability to prevent potential attacks. This includes operators, platform administrators, vulnerability management teams, and security teams who are responsible for ensuring the security and integrity of their systems.

Technical summary

The vulnerability is located in the Centralized Third Party Jars component of Oracle Coherence. It has a CVSS 3.1 Base Score of 9.3, indicating a critical severity level. The CVSS Vector is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N). The vulnerability allows unauthenticated attackers with network access via HTTP to compromise the system. Successful attacks can result in unauthorized access to critical data or complete access to all Oracle Coherence accessible data, as well as unauthorized update, insert or delete access to some of Oracle Coherence accessible data.

Defensive priority

High

Recommended defensive actions

  • Apply the patch provided by Oracle Corporation
  • Restrict access to Oracle Coherence to only trusted networks
  • Monitor Oracle Coherence logs for suspicious activity
  • Consider implementing additional security controls, such as Web Application Firewalls
  • Verify that Oracle Coherence is properly configured and up-to-date
  • 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

Evidence notes

The CVE record was published on 2026-06-17T10:40:22.730Z and was last modified on 2026-06-17T19:57:33.377Z. The NVD entry is currently Analyzed. This information is based on the NVD entry and the CVE record. The vulnerability affects Oracle Coherence version 15.1.1.0.0. There is no evidence of exploitation in the wild, but defenders should verify that their systems are properly configured and up-to-date.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-35306 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-35306

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-35306 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-35306

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental 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.