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.

oracle CPUApr2026: Business Intelligence Enterprise Edition

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:28385 advisory.

    Red Hat Satellite is a system management solution that allows organizations     to configure and maintain their systems without the necessity to provide     public Internet access to their servers or other client systems. It     performs provisioning and configuration management of predefined standard     operating environments.

    Security Fix(es):

    * python3.12-pillow: Pillow: Out-of-bounds Write via Specially Crafted PSD Image (CVE-2026-25990)
    * candlepin: com.mchange/c3p0: c3p0: Arbitrary Code Execution via deserialization of crafted objects     (CVE-2026-27830)
    * dynflow-utils: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:18054 advisory.

    Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 8.1.6 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 8.1.5, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 8.1.6 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * bcprov-jdk18on: GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813)

    *bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly     (CVE-2025-14813)

    * bouncycastle: BC-JAVA: unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion     (CVE-2026-3505)

    * bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid     (CVE-2026-5588)

    * bcprov-ext-jdk15on: LDAP injection vulnerability in LDAPStoreHelper.java (CVE-2026-0636)

    * bcprov-jdk12: private key leakage via non-constant time comparisons (CVE-2026-5598)

    * netty-codec-http: Netty: Denial of Service via HTTP/2 CONTINUATION frame flood (CVE-2026-33871)

    * netty-codec-http: Netty: Request smuggling via incorrect parsing of HTTP/1.1 chunked transfer encoding     extension values (CVE-2026-33870)

    * artemis-server: Apache Artemis, Apache ActiveMQ Artemis: Message injection and exfiltration due to     missing authentication (CVE-2026-27446)

    * org.hibernate.orm/hibernate-c3p0: c3p0: Arbitrary Code Execution via deserialization of crafted objects     [(CVE-2026-27830)

    * org.keycloak-keycloak-parent: Minimatch: Denial of Service via catastrophic backtracking in glob     expressions (CVE-2026-27904)

    * mchange-commons-java: mchange-commons-java: Arbitrary code execution via JNDI dereferencing of crafted     objects (CVE-2026-27727)

    * io.hawt-project: minimatch: Denial of Service via specially crafted glob patterns (CVE-2026-26996)

    * wildfly-elytron-integration: Wildfly Elytron Brute Force Attack via CLI  (CVE-2025-23368)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:18055 advisory.

    Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 8.1.6 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 8.1.5, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 8.1.6 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * bcprov-jdk18on: GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813)

    *bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly     (CVE-2025-14813)

    * bouncycastle: BC-JAVA: unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion     (CVE-2026-3505)

    * bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid     (CVE-2026-5588)

    * bcprov-ext-jdk15on: LDAP injection vulnerability in LDAPStoreHelper.java (CVE-2026-0636)
    * bcprov-jdk12: private key leakage via non-constant time comparisons (CVE-2026-5598)

    * netty-codec-http: Netty: Denial of Service via HTTP/2 CONTINUATION frame flood (CVE-2026-33871)

    * netty-codec-http: Netty: Request smuggling via incorrect parsing of HTTP/1.1 chunked transfer encoding     extension values (CVE-2026-33870)

    * artemis-server: Apache Artemis, Apache ActiveMQ Artemis: Message injection and exfiltration due to     missing authentication (CVE-2026-27446)

    * org.hibernate.orm/hibernate-c3p0: c3p0: Arbitrary Code Execution via deserialization of crafted objects     (CVE-2026-27830)

    * org.keycloak-keycloak-parent: Minimatch: Denial of Service via catastrophic backtracking in glob     expressions (CVE-2026-27904)

    * mchange-commons-java: mchange-commons-java: Arbitrary code execution via JNDI dereferencing of crafted     objects (CVE-2026-27727)

    * io.hawt-project: minimatch: Denial of Service via specially crafted glob patterns (CVE-2026-26996)

    * wildfly-elytron-integration: Wildfly Elytron Brute Force Attack via CLI (CVE-2025-23368)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Oracle Business Intelligence Enterprise Edition (OAS) 7.6.0.0.0 installed on the remote host is affected by multiple vulnerabilities as referenced in the April 2026 CPU advisory.

  - mchange-commons-java, a library that provides Java utilities, includes code that mirrors early     implementations of JNDI functionality, including support for remote `factoryClassLocation` values, by     which code can be downloaded and invoked within a running application. If an attacker can provoke an     application to read a maliciously crafted `jaxax.naming.Reference` or serialized object, they can provoke     the download and execution of malicious code. Implementations of this functionality within the JDK were     disabled by default behind a System property that defaults to `false`,     `com.sun.jndi.ldap.object.trustURLCodebase`. However, since mchange-commons-java includes an independent     implementation of JNDI derefencing, libraries (such as c3p0) that resolve references via that     implementation could be provoked to download and execute malicious code even after the JDK was hardened.
    Mirroring the JDK patch, mchange-commons-java's JNDI functionality is gated by configuration parameters     that default to restrictive values starting in version 0.4.0. No known workarounds are available. Versions     prior to 0.4.0 should be avoided on application CLASSPATHs. (CVE-2026-27727)

  - Eclipse Jersey 2.28 to 2.33 and Eclipse Jersey 3.0.0 to 3.0.1 contains a local information disclosure     vulnerability. This is due to the use of the File.createTempFile which creates a file inside of the system     temporary directory with the permissions: -rw-r--r--. Thus the contents of this file are viewable by all     other users locally on the system. As such, if the contents written is security sensitive, it can be     disclosed to other local users. (CVE-2021-28168)

  - In Connect2id Nimbus JOSE+JWT before 9.37.2, an attacker can cause a denial of service (resource     consumption) via a large JWE p2c header value (aka iteration count) for the PasswordBasedDecrypter     (PBKDF2) component. (CVE-2023-52428)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Oracle Business Intelligence Enterprise Edition (OAS) 8.2.0.0.0 installed on the remote host is affected by multiple vulnerabilities as referenced in the April 2026 CPU advisory.

  - Vulnerability in the Oracle Business Intelligence Enterprise Edition product of Oracle Analytics     (component: Platform Security (Eclipse Jersey)). Supported versions that are affected are 7.6.0.0.0 and     8.2.0.0.0. Easily exploitable vulnerability allows low privileged attacker with logon to the     infrastructure where Oracle Business Intelligence Enterprise Edition executes to compromise Oracle     Business Intelligence Enterprise Edition. Successful attacks of this vulnerability can result in     unauthorized access to critical data or complete access to all Oracle Business Intelligence Enterprise     Edition accessible data. (CVE-2021-28168)

  - Vulnerability in the Oracle Business Intelligence Enterprise Edition product of Oracle Analytics     (component: Platform Security (Mchange Commons Java)). Supported versions that are affected are 7.6.0.0.0     and 8.2.0.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via     LDAP to compromise Oracle Business Intelligence Enterprise Edition. Successful attacks of this     vulnerability can result in takeover of Oracle Business Intelligence Enterprise Edition. (CVE-2026-27727)

  - Vulnerability in the Oracle Business Intelligence Enterprise Edition product of Oracle Analytics     (component: BI Platform Security (OpenSSL)). The supported version that is affected is 8.2.0.0.0. Easily     exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle     Business Intelligence Enterprise Edition. Successful attacks require human interaction from a person other     than the attacker. Successful attacks of this vulnerability can result in takeover of Oracle Business     Intelligence Enterprise Edition. (CVE-2025-15467)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0855-1 advisory.

    c3p0:

    - Security issues fixed:

      - CVE-2026-27830: Fixed unsafe object deserialization (bsc#1258942)

    - Fix the null pointer exception in the userOverridesAsString       method (bsc#1259313).

    mchange-commons:

    - Security issues fixed:

      - CVE-2026-27727: Disabled remote ClassLoading when dereferencing javax.naming.Reference instances     (bsc#1258913)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-27830)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-27830)

ID	Name	Product	Family	Type	Severity
322312	RHEL 9 : Satellite 6.18.6 Async Update (Important) (RHSA-2026:28385)	Nessus	Red Hat Local Security Checks	Local	high
315192	RHEL 8 : Red Hat JBoss Enterprise Application Platform 8.1.6 (RHSA-2026:18054)	Nessus	Red Hat Local Security Checks	Local	critical
315188	RHEL 9 : Red Hat JBoss Enterprise Application Platform 8.1.6 (RHSA-2026:18055)	Nessus	Red Hat Local Security Checks	Local	critical
309965	Oracle Business Intelligence Enterprise Edition (OAS 7.6) (April 2026 CPU)	Nessus	Misc.	Local	high
309964	Oracle Business Intelligence Enterprise Edition (OAS 8.2) (April 2026 CPU)	Nessus	Misc.	Local	high
301811	openSUSE 15 Security Update : c3p0 and mchange-commons (SUSE-SU-2026:0855-1)	Nessus	SuSE Local Security Checks	Local	high
300173	Linux Distros Unpatched Vulnerability : CVE-2026-27830	Nessus	Misc.	Local	high
437985	SCA: security update for com.mchange:c3p0 (GHSA-5476-xc4j-rqcv)	Tenable Cloud Security	SCA Checks	Local	high
437985	SCA: security update for com.mchange:c3p0 (GHSA-5476-xc4j-rqcv)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-27830

high

Tenable Plugins

Coming Soon

high

critical

critical

high

high

high

high

high

high