{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-27830", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-02-24T02:32:39.800Z", "datePublished": "2026-02-26T00:45:18.222Z", "dateUpdated": "2026-07-15T01:12:55.564Z" }, "containers": { "cna": { "title": "c3p0 vulnerable to Remote Code Execution via unsafe deserialization of userOverridesAsString property", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-502", "lang": "en", "description": "CWE-502: Deserialization of Untrusted Data", "type": "CWE" } ] }, { "descriptions": [ { "cweId": "CWE-94", "lang": "en", "description": "CWE-94: Improper Control of Generation of Code ('Code Injection')", "type": "CWE" } ] } ], "metrics": [ { "cvssV4_0": { "attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "baseScore": 8.9, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H", "version": "4.0" } } ], "references": [ { "name": "https://github.com/swaldman/c3p0/security/advisories/GHSA-5476-xc4j-rqcv", "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/swaldman/c3p0/security/advisories/GHSA-5476-xc4j-rqcv" }, { "name": "https://github.com/swaldman/c3p0/commit/e14cbd8166e423e2e9a9d6f08b2add3433492d6e", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/swaldman/c3p0/commit/e14cbd8166e423e2e9a9d6f08b2add3433492d6e" }, { "name": "https://mogwailabs.de/en/blog/2025/02/c3p0-you-little-rascal", "tags": [ "x_refsource_MISC" ], "url": "https://mogwailabs.de/en/blog/2025/02/c3p0-you-little-rascal" }, { "name": "https://www.mchange.com/projects/c3p0/#configuring_security", "tags": [ "x_refsource_MISC" ], "url": "https://www.mchange.com/projects/c3p0/#configuring_security" }, { "name": "https://www.mchange.com/projects/c3p0/#security-note", "tags": [ "x_refsource_MISC" ], "url": "https://www.mchange.com/projects/c3p0/#security-note" } ], "affected": [ { "vendor": "swaldman", "product": "c3p0", "versions": [ { "version": "< 0.12.0", "status": "affected" } ] } ], "providerMetadata": { "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-02-26T00:45:18.222Z" }, "descriptions": [ { "lang": "en", "value": "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>`. 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." } ], "source": { "advisory": "GHSA-5476-xc4j-rqcv", "discovery": "UNKNOWN" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-05-02T03:55:34.556407Z", "id": "CVE-2026-27830", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-04T19:40:49.642Z" } }, { "affected": [ { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:apache_camel_spring_boot:4.14" ], "defaultStatus": "unaffected", "packageName": "com.mchange/c3p0", "product": "Red Hat build of Apache Camel 4.14.4 for Spring Boot 3.5.11", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:debezium:3" ], "defaultStatus": "unaffected", "packageName": "com.mchange/c3p0", "product": "Red Hat Build of Debezium 3.2", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9" ], "defaultStatus": "unaffected", "packageName": "c3p0/c3p0", "product": "Red Hat JBoss Enterprise Application Platform 8.1", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9" ], "defaultStatus": "unaffected", "packageName": "com.mchange/c3p0", "product": "Red Hat JBoss Enterprise Application Platform 8.1", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ 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This vulnerability allows an attacker to achieve arbitrary code execution by providing maliciously crafted Java-serialized objects or `javax.naming.Reference` instances. By manipulating the `userOverridesAsString` property, an attacker can cause the application to download and execute malicious code from a remote location on its CLASSPATH." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-502", "description": "Deserialization of Untrusted Data", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-27830" }, { "name": "RHBZ#2442908", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2442908" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27830.json" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:18054" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:18055" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:28385" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:4285" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:18059" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:3890" } ], "solutions": [ { "lang": "en", "value": "RHSA-2026:18054: Red Hat JBoss EAP 8.1 for RHEL 8" }, { "lang": "en", "value": "RHSA-2026:18055: Red Hat JBoss EAP 8.1 for RHEL 9" }, { "lang": "en", "value": "RHSA-2026:28385: Red Hat Satellite 6.18 for RHEL 9" }, { "lang": "en", "value": "RHSA-2026:4285: Red Hat Build of Debezium 3.2" }, { "lang": "en", "value": "RHSA-2026:18059: Red Hat JBoss Enterprise Application Platform 8.1" }, { "lang": "en", "value": "RHSA-2026:3890: Red Hat build of Apache Camel 4.14.4 for Spring Boot 3.5.11" } ], "timeline": [ { "lang": "en", "time": "2026-02-26T01:01:56.834Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-02-26T00:45:18.222Z", "value": "Made public." } ], "title": "c3p0: c3p0: Arbitrary Code Execution via deserialization of crafted objects", "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-07-15T01:12:55.564Z" } } ] } }