{"cve":"CVE-2026-27727","nvd":{"published":"2026-02-25T17:25:39.910","modified":"2026-08-17T12:17:42.857","status":"Modified","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","score":8.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-74","CWE-502"],"references":["https://github.com/swaldman/mchange-commons-java/security/advisories/GHSA-m2cm-222f-qw44","https://mogwailabs.de/en/blog/2025/02/c3p0-you-little-rascal","https://www.mchange.com/projects/c3p0/#configuring_security","https://www.mchange.com/projects/c3p0/#security-note","https://access.redhat.com/errata/RHSA-2026:14873"],"products":["mchange:mchange_commons_java"],"source":"nvd","synced_at":"2026-10-19T22:24:17.937441719+00:00"},"epss":{"cve":"CVE-2026-27727","score":0.00977,"percentile":0.62165,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-m2cm-222f-qw44","url":"https://osv.dev/vulnerability/GHSA-m2cm-222f-qw44","summary":"mchange-commons-java: Remote Code Execution via JNDI Reference Resolution","modified":"2026-09-10T03:50:35.310683664Z","packages":[{"ecosystem":"Maven","name":"com.mchange:mchange-commons-java","purl":"pkg:maven/com.mchange/mchange-commons-java","ranges":["<0.4.0"],"fixed":["0.4.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}