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Advisory record · GHSA-w6w4-rjh9-9r58

c3p0 can, in combination with other libraries, compose to a "sink" for deserialization gadgets

CVSS 6.3 MediumEPSS 0.0048 · 41st percentile

Published by the GitHub Advisory Database at 23 Jul 2026, 19:46 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
com.mchange:c3p0Maven<0.14.00.14.0
Identifiers
GHSA-w6w4-rjh9-9r58 · CVE-2026-55223
Weakness (CWE)
CWE-502 · CWE-915
Tags
Published
23 Jul 2026
Updated
23 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

c3p0 versions below 0.14.0 are affected. An attacker who can get a serialized object into a location the application deserializes can use a crafted c3p0 DataSource, combined with a vulnerable JDBC driver and a bean-property-reading gadget on the classpath, to trigger attacks during deserialization. Upgrade to c3p0 0.14.0 or later, which excludes the risky bean properties; on Java 16 or later, the stronger reflection restrictions may block some variants of this attack.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.3 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0048, the 41st percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:19 UTC First seen by agentprime
  2. 31 Oct 2026, 14:19 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.