SB20260427154 - Remote code execution in c3p0
Published: April 27, 2026
Security Bulletin ID
SB20260427154
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Deserialization of Untrusted Data (CVE-ID: CVE-2026-27830)
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to unsafe deserialization in the userOverridesAsString property of c3p0 ConnectionPoolDataSource implementations when processing maliciously crafted Java-serialized objects or javax.naming.Reference instances. A remote user can reset this property or supply crafted serialized objects or references to execute arbitrary code.
The impact can be amplified when embedded JNDI references trigger dereferencing of a remote factoryClassLocation.
Remediation
Install update from vendor's website.