{"id":"CVE-2026-27727","title":"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…","summary":"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…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-74","CWE-502"],"vendor":"mchange","product":"mchange_commons_java","affected":["mchange_commons_java < 0.4.0"],"patched":["mchange_commons_java 0.4.0"],"published":"2026-02-25","updated":"2026-07-02","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-27727","references":[{"url":"https://github.com/swaldman/mchange-commons-java/security/advisories/GHSA-m2cm-222f-qw44","label":"security-advisories@github.com"},{"url":"https://mogwailabs.de/en/blog/2025/02/c3p0-you-little-rascal","label":"security-advisories@github.com"},{"url":"https://www.mchange.com/projects/c3p0/#configuring_security","label":"security-advisories@github.com"},{"url":"https://www.mchange.com/projects/c3p0/#security-note","label":"security-advisories@github.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14873","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:14874","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:18054","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:18055","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:18059","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:34365","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:3890","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:4285","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-27727","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2442671","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27727.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-27727"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27727"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"epss":0.00812,"epssPercentile":0.55027,"ingestedAt":"2026-07-02T12:34:40.305Z","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-02-25T20:13:53.240165Z"},"scores":{"nvd":9.8,"cna":8.9,"vendor":8.3},"slug":"CVE-2026-27727","body":"## Overview\n\nmchange-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.\n\n## Affected\n\n- `mchange_commons_java < 0.4.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `mchange_commons_java 0.4.0`\n\n## Vendor advisories\n\n- **RHSA-2026:18054** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 8 · released 2026-05-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:18054)\n- **RHSA-2026:14874** · Red Hat · fixed in: Red Hat Satellite 6.16 for RHEL 8, Red Hat Satellite 6.16 for RHEL 9 · released 2026-05-07 · [advisory](https://access.redhat.com/errata/RHSA-2026:14874)\n- **RHSA-2026:18055** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 9 · released 2026-05-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:18055)\n- **RHSA-2026:14873** · Red Hat · fixed in: Red Hat Satellite 6.17 for RHEL 9 · released 2026-05-07 · [advisory](https://access.redhat.com/errata/RHSA-2026:14873)\n- **RHSA-2026:34365** · Red Hat · fixed in: Red Hat Satellite 6.19 for RHEL 9 · released 2026-07-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:34365)\n- **RHSA-2026:4285** · Red Hat · fixed in: Red Hat Build of Debezium 3.2 · released 2026-03-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:4285)\n- **RHSA-2026:18059** · Red Hat · fixed in: Red Hat JBoss Enterprise Application Platform 8.1.7.GA · released 2026-05-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:18059)\n- **RHSA-2026:3890** · Red Hat · fixed in: Red Hat build of Apache Camel 4.14.4 for Spring Boot 3.5.11 · released 2026-03-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:3890)\n- **Red Hat VEX** · Important · affected: Red Hat build of Debezium 2, Red Hat Fuse 7, Red Hat JBoss Enterprise Application Platform 7, Red Hat Process Automation 7, Red Hat Satellite 6, streams for Apache Kafka 2 · no fix planned: Red Hat Fuse 7, Red Hat JBoss Enterprise Application Platform 7, Red Hat Process Automation 7, streams for Apache Kafka 2, … · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27727.json)","depth":"abyssal","depthScore":66,"depthScoreParts":{"impact":53.9,"likelihood":0.2,"exploitation":12,"ransomware":0},"changes":[{"seq":203587,"id":"CVE-2026-27727","ts":1789475846158,"field":"exploit_available","old":"false","new":"true"}]}