# CVE-2026-60303: Oracle Coherence partial denial of service in Core component

Source: https://junglewise.ai/threats/cve-2026-60303-oracle-coherence-partial-denial-of-service-in-core-component  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-21. Updated: 2026-07-21  
License: CC BY 4.0 with a link back

CVE-2026-60303 · Severity: medium · CVSS 4.3 · Published 2026-07-21

Oracle Coherence, a data grid solution used for high-speed data processing and application scaling, contains a security vulnerability in its core component. An attacker with basic user access to the network can exploit this flaw to disrupt the service, potentially causing a partial system outage. While this does not allow for data theft, it can impact the reliability of applications that depend on Coherence for real-time data management.

Technologies: [Oracle Coherence](https://junglewise.ai/threats/technologies/coherence). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-60303 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-60303 being exploited in the wild.

**How severe is CVE-2026-60303?** Medium severity, with a CVSS score of 4.3, published 21 July 2026.

**Which products and versions are affected?** Oracle Coherence 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0.

**Is there a fix for CVE-2026-60303?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-60303 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-60303?** Check whether you run Oracle Coherence at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This vulnerability exists in the Core component of Oracle Coherence within the Oracle Fusion Middleware suite. It is classified as a denial-of-service (DoS) vulnerability that can be triggered remotely via HTTP. An attacker requires low-level privileges (authenticated access) to successfully exploit the flaw. The impact is limited to a partial loss of availability of the Coherence service. The vulnerability is easily exploitable and has been addressed in the Oracle Critical Patch Update for July 2026.

## Affected products

- Oracle Coherence 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 15.1.1.0.0

## Timeline

- 2026-07-21: disclosed: Initial publication by Oracle and NVD
- 2026-07-21: advisory: Oracle Critical Patch Update July 2026 released

## References

- [https://www.oracle.com/security-alerts/cpujul2026.html](https://www.oracle.com/security-alerts/cpujul2026.html)

## Related threats

- [Oracle Coherence partial denial of service via HTTP](https://junglewise.ai/threats/cve-2026-83416-oracle-coherence-partial-denial-of-service-via-http)
- [Oracle Coherence privilege escalation via HTTP](https://junglewise.ai/threats/cve-2026-83415-oracle-coherence-privilege-escalation-via-http)
- [Oracle Coherence information disclosure in Core component](https://junglewise.ai/threats/cve-2026-83414-oracle-coherence-information-disclosure-in-core-component)
- [Oracle Coherence integrity bypass in Core](https://junglewise.ai/threats/cve-2026-83413-oracle-coherence-integrity-bypass-in-core)
- [Oracle Coherence unauthorized data access vulnerability](https://junglewise.ai/threats/cve-2026-83412-oracle-coherence-unauthorized-data-access-vulnerability)