HIGH
CVE-2019-5427
CWE-776Published: April 22, 2019· Updated: Jun 17, 2026
7.5
CVSS v3.1
Official 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.
Technical Analysis
CVE-2019-5427 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Fedora1 product(s)
fedora
mchange1 product(s)
c3p0
Oracle9 product(s)
communications ip service activatorcommunications session route managerdocumakerenterprise manager base platformenterprise manager ops centerflexcube private bankinghyperion infrastructure technologyretail xstore point of servicewebcenter sites
Source: NVD CPE · 19 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (16)
→
https://hackerone.com/reports/509315Exploit · Issue Tracking · Patch · Third Party Advisory
→
→
→
https://www.oracle.com/security-alerts/cpuapr2020.htmlThird Party Advisory
→
https://www.oracle.com/security-alerts/cpujan2021.htmlThird Party Advisory
→
https://www.oracle.com/security-alerts/cpujul2020.htmlThird Party Advisory
→
https://www.oracle.com/security-alerts/cpuoct2020.htmlThird Party Advisory
→
https://www.oracle.com/security-alerts/cpuoct2021.htmlThird Party Advisory
→
https://hackerone.com/reports/509315Exploit · Issue Tracking · Patch · Third Party Advisory
→
→
→
https://www.oracle.com/security-alerts/cpuapr2020.htmlThird Party Advisory
→
https://www.oracle.com/security-alerts/cpujan2021.htmlThird Party Advisory
→
https://www.oracle.com/security-alerts/cpujul2020.htmlThird Party Advisory
→
https://www.oracle.com/security-alerts/cpuoct2020.htmlThird Party Advisory
Quick Facts
CVE IDCVE-2019-5427
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-776
CISA KEVNo
Affected3 vendor(s)
PublishedApr 22, 2019
Related CVEs (CWE-776)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-5427 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.