CVE-2026-27830: Red Hat Build Of Apache Camel - Hawtio 4
High severity, CVSS 8.0. EPSS: 2.2% chance of exploitation in the next 30 days.
c3p0, a JDBC Connection pooling library, is vulnerable to attack via maliciously crafted Java-serialized objects and `javax.naming.Reference` instances. Several c3p0 `ConnectionPoolDataSource` implementations have a property called `userOverridesAsString` which conceptually represents a `Map<String,Map<String,String>>`. Prior to v0.12.0, that property was maintained as a hex-encoded serialized object. Any attacker able to reset this property, on an existing `ConnectionPoolDataSource` or via maliciously crafted serialized objects or `javax.naming.Reference` instances could be tailored execute unexpected code on the application's `CLASSPATH`. The danger of this vulnerability was strongly magnified by vulnerabilities in c3p0's main dependency, mchange-commons-java. This library includes code that mirrors early implementations of JNDI functionality, including ungated support for remote `factoryClassLocation` values. Attackers could set c3p0's `userOverridesAsString` hex-encoded serialized objects that include objects "indirectly serialized" via JNDI references. Deserialization of those objects and dereferencing of the embedded `javax.naming.Reference` objects could provoke download and execution of malicious code from a remote `factoryClassLocation`. Although hazard presented by c3p0's vulnerabilites are exarcerbated by vulnerabilities in mchange-commons-java, use of Java-serialized-object hex as the format for a writable Java-Bean property, of objects that may be exposed across JNDI interfaces, represents a serious independent fragility. The `userOverridesAsString` property of c3p0 `ConnectionPoolDataSource` classes has been reimplemented to use a safe CSV-based format, rather than rely upon potentially dangerous Java object deserialization. c3p0-0.12.0+ and above depend upon mchange-commons-java 0.4.0+, which gates support for remote `factoryClassLocation` values by configuration parameters that default to restrictive values. c3p0 additionally enforces the new mchange-commons-java `com.mchange.v2.naming.nameGuardClassName` to prevent injection of unexpected, potentially remote JNDI names. There is no supported workaround for versions of c3p0 prior to 0.12.0.
Affected products
- Red Hat Red Hat Build Of Apache Camel - Hawtio 4
- Red Hat Red Hat Build Of Apache Camel 4.14.4 For Spring Boot 3.5.11
- Red Hat Red Hat Build Of Debezium 2
- Red Hat Red Hat Build Of Debezium 3
- Red Hat Red Hat Build Of Debezium 3.2
- Red Hat Red Hat Fuse 7
- Red Hat Red Hat JBoss Enterprise Application Platform 7
- Red Hat Red Hat JBoss Enterprise Application Platform 8
- Red Hat Red Hat JBoss Enterprise Application Platform 8.1
- Red Hat Red Hat JBoss Enterprise Application Platform 8.1 For Rhel 8: before 0:6.6.48-1.Final_redhat_00001.1.el8eap (fixed in 0:6.6.48-1.Final_redhat_00001.1.el8eap)
- Red Hat Red Hat JBoss Enterprise Application Platform 8.1 For Rhel 9: before 0:6.6.48-1.Final_redhat_00001.1.el9eap (fixed in 0:6.6.48-1.Final_redhat_00001.1.el9eap)
- Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat Red Hat Process Automation 7
- Red Hat Red Hat Satellite 6
- Red Hat Red Hat Satellite 6.18 For Rhel 9: before 0:4.6.6-1.el9sat (fixed in 0:4.6.6-1.el9sat)
- Red Hat Streams For Apache Kafka 2
- Red Hat Streams For Apache Kafka 3
- Swaldman c3p0: before 0.12.0 (fixed in 0.12.0)
Published 2026-02-26. Last modified 2026-09-14.