{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"important"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2026-27830","title":"Title"},{"category":"description","text":"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.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2026-27830","url":"https://www.suse.com/security/cve/CVE-2026-27830"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1258942 for CVE-2026-27830","url":"https://bugzilla.suse.com/1258942"},{"category":"external","summary":"Advisory link for SUSE-SU-2026:0855-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2026-March/024666.html"}],"title":"SUSE CVE 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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.","title":"CVE description"}],"product_status":{"first_fixed":["SUSE Manager Proxy LTS 4.3:release-notes-susemanager-proxy-4.3.17-150400.3.107.1","SUSE Manager Retail Branch Server LTS 4.3:release-notes-susemanager-proxy-4.3.17-150400.3.107.1","SUSE Manager Server LTS 4.3:release-notes-susemanager-4.3.17-150400.3.151.1"],"recommended":["SUSE Manager Server LTS 4.3:c3p0-0.9.5.5-150400.3.5.1","SUSE Manager Server LTS 4.3:mchange-commons-0.2.20-150400.3.3.1","openSUSE Leap 15.6:c3p0-0.9.5.5-150400.3.5.1","openSUSE Leap 15.6:c3p0-javadoc-0.9.5.5-150400.3.5.1","openSUSE Leap 15.6:mchange-commons-0.2.20-150400.3.3.1","openSUSE Leap 15.6:mchange-commons-javadoc-0.2.20-150400.3.3.1"]},"references":[{"category":"external","summary":"CVE-2026-27830","url":"https://www.suse.com/security/cve/CVE-2026-27830"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1258942 for CVE-2026-27830","url":"https://bugzilla.suse.com/1258942"},{"category":"external","summary":"Advisory link for SUSE-SU-2026:0855-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2026-March/024666.html"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["SUSE Manager Server LTS 4.3:c3p0-0.9.5.5-150400.3.5.1","SUSE Manager Server LTS 4.3:mchange-commons-0.2.20-150400.3.3.1","openSUSE Leap 15.6:c3p0-0.9.5.5-150400.3.5.1","openSUSE Leap 15.6:c3p0-javadoc-0.9.5.5-150400.3.5.1","openSUSE Leap 15.6:mchange-commons-0.2.20-150400.3.3.1","openSUSE Leap 15.6:mchange-commons-javadoc-0.2.20-150400.3.3.1"]}],"scores":[{"cvss_v3":{"baseScore":8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"products":["SUSE Manager Server LTS 4.3:c3p0-0.9.5.5-150400.3.5.1","SUSE Manager Server LTS 4.3:mchange-commons-0.2.20-150400.3.3.1","openSUSE Leap 15.6:c3p0-0.9.5.5-150400.3.5.1","openSUSE Leap 15.6:c3p0-javadoc-0.9.5.5-150400.3.5.1","openSUSE Leap 15.6:mchange-commons-0.2.20-150400.3.3.1","openSUSE Leap 15.6:mchange-commons-javadoc-0.2.20-150400.3.3.1"]}],"threats":[{"category":"impact","date":"2026-02-26T03:02:47Z","details":"important"}],"title":"CVE-2026-27830"}]}