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CVE-2019-5427 c3p0

Affected softwarec3p0
Severity7.5 High CVSS 3.1 2 scores
Fixed in0.9.5.4
WeaknessXML entity expansion (CWE-776)
Published22 Apr 2019
Updated17 Jun 2026

Description

c3p0 version < 0.9.5.4 may be exploited by a billion laughs attack when loading XML configuration due to missing protections against recursive entity expansion when loading configuration.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. The 1 repository below are public GitHub repositories with fewer than 5 stars.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC 1 indexed, none at 5+ stars
  • EPSS 4.9% chance in 30 days

1 of these are GitHub repositories with fewer than 5 stars. They are listed for reference and don't count toward the exploitation status above.

IndexArtifactStarsFirst seen
GitHub PoC version between CVE-2018-20433 and CVE-2019-5427 2020-12-13

Waratek protection

Protected by Waratek

Waratek has a rule that blocks attacks on this vulnerability.

  • Protection full
  • Action available security rule
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Protected by Waratek.

How to mitigate CVE-2019-5427

Upgrade c3p0 to 0.9.5.4 or later. Until you can, Waratek RASP blocks exploitation with a security rule that blocks this kind of attack. It runs inside the Java application, with no code changes.

Waratek RASP Runtime protection for Java applications

CVSS

7.5 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
com.mchange:c3p0 0 0.9.5.4 unbounded

Products and versions

12 products, 20 version entries
SourceVendorProductSchemeAffected versions
osv com.mchange c3p0 generic < 0.9.5.4
nvd fedoraproject fedora generic 29 · 30
nvd mchange c3p0 generic < 0.9.5.4
nvd oracle communications ip service activator generic 7.3.0 · 7.4.0
nvd oracle communications session route manager generic ≥ 8.2.0 and ≤ 8.2.2
nvd oracle documaker generic ≥ 12.6.0 and ≤ 12.6.6
nvd oracle enterprise manager base platform generic 13.2.1.0
nvd oracle enterprise manager ops center generic 12.4.0.0
nvd oracle flexcube private banking generic 12.0.0 · 12.1.0
nvd oracle hyperion infrastructure technology generic 11.1.2.4
nvd oracle retail xstore point of service generic 15.0 · 16.0 · 17.0 · 18.0 · 19.0
nvd oracle webcenter sites generic 12.2.1.3.0 · 12.2.1.4.0

References

URLTags
https://hackerone.com/reports/509315 WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFIVX6HOVNLAM7W3SUAMHYRNLCVQSAWR WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQ47OFV57Y2DAHMGA5H3JOL4WHRWRFN4 WEB
https://www.oracle.com/security-alerts/cpuapr2020.html WEB
https://www.oracle.com/security-alerts/cpujan2021.html WEB
https://www.oracle.com/security-alerts/cpujul2020.html WEB
https://www.oracle.com/security-alerts/cpuoct2020.html WEB
https://www.oracle.com/security-alerts/cpuoct2021.html WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFIVX6HOVNLAM7W3SUAMHYRNLCVQSAWR/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQ47OFV57Y2DAHMGA5H3JOL4WHRWRFN4/ Third Party Advisory

Timeline

Published2019-04-22By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.