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Ubuntu 26.04 LTS c3p0 Important Remote Code Exec Vulnerability USN-8642

Ubuntu 26.04 LTS c3p0 Important Remote Code Exec Vulnerability USN-8642

Linuxsecurity •LinuxSecurity Advisories • August 18, 2026

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Several security issues were fixed in c3p0. Software Description: - c3p0: JDBC Connection pooling library Details: It was discovered that c3p0 was vulnerable to remote code execution via maliciously crafted serialized objects and JNDI references. An attacker could use this to execute arbitrary code, bypass security restrictions, or cause a denial of service.

Several security issues were fixed in c3p0.

Software Description:

- c3p0: JDBC Connection pooling library

It was discovered that c3p0 was vulnerable to remote code execution via maliciously

crafted serialized objects and JNDI references. An attacker could use this to

execute arbitrary code, bypass security restrictions, or cause a denial of service.

The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS libc3p0-java 0.9.1.2-11ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 24.04 LTS libc3p0-java 0.9.1.2-10ubuntu2+esm1 Available with Ubuntu Pro Ubuntu 22.04 LTS libc3p0-java 0.9.1.2-10ubuntu1+esm1 Available with Ubuntu Pro Ubuntu 20.04 LTS libc3p0-java 0.9.1.2-10ubuntu0.20.04.1+esm1 Available with Ubuntu Pro Ubuntu 18.04 LTS libc3p0-java 0.9.1.2-9+deb8u1ubuntu0.18.04.1+esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.

CVE-2026-27727, CVE-2026-27830, CVE-2026-55153, CVE-2026-55223

Ubuntu Security Notice USN-8642-1

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