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.

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

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. 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

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