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DEBIAN-CVE-2026-27830

Type: advisorySource: OSV1 source record

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, represent

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-27830

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-27830

c3p0

Source reference: /affected/0/package/name

Affected versions
0.9.1.2-10

Source reference: /affected/0/versions

0.9.1.2-10.1

Source reference: /affected/0/versions

0.9.1.2-10.1~deb12u1

Source reference: /affected/0/versions

0.9.1.2-11

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

c3p0

Source reference: /affected/1/package/name

Affected versions
0.9.1.2-10.1

Source reference: /affected/1/versions

0.9.1.2-11

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

c3p0

Source reference: /affected/2/package/name

Affected versions
0.9.1.2-10.1

Source reference: /affected/2/versions

0.9.1.2-11

Source reference: /affected/2/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "c3p0",
      "purl": "pkg:deb/debian/c3p0?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "0.9.1.2-10",
      "0.9.1.2-10.1",
      "0.9.1.2-10.1~deb12u1",
      "0.9.1.2-11"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27830.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "c3p0",
      "purl": "pkg:deb/debian/c3p0?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "0.9.1.2-10.1",
      "0.9.1.2-11"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27830.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "c3p0",
      "purl": "pkg:deb/debian/c3p0?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "0.9.1.2-10.1",
      "0.9.1.2-11"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27830.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56629 · Revision 1
Added to Heist Feed
Publisher date
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Revision history

  1. DEBIAN-CVE-2026-27830 · Revision 1Source updated