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Vulnerability record · CVE-2019-5442 · published 12 June 2019

CVE-2019-5442: Pippo vulnerability

Pippo · Pippo

XML Entity Expansion (Billion Laughs Attack) on Pippo 1.12.0 results in Denial of Service.Entities are created recursively and large amounts of heap memory is taken. Eventually, the JVM process will run out of memory. Otherwise, if the OS does not bound the memory on that process, memory will continue to be exhausted and will affect other processes on the system.

7.5 CVSS 3.1 High EPSS 1.4% · top 27.8% CWE-776 · CWE-776
7.5CVSS 3.1 base score, v2 5.0
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

XML Entity Expansion (Billion Laughs Attack) on Pippo 1.12.0 results in Denial of Service.Entities are created recursively and large amounts of heap memory is taken. Eventually, the JVM process will run out of memory. Otherwise, if the OS does not bound the memory on that process, memory will continue to be exhausted and will affect other processes on the system.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://hackerone.com/reports/506791 ExploitThird Party Advisory
https://hackerone.com/reports/506791 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-20059Pippo xml external entity (xxe) vulnerabilityjaxb/JaxbEngine.java in Pippo 1.11.0 allows XXE.EPSS 1.5%9.8CVE-2017-18349Alibaba fastjson improper input validation vulnerabilityparseObject in Fastjson before 1.2.25, as used in FastjsonEngine in Pippo 1.11.0 and other products, allows remote attackers to execute arbitrary cod…EPSS 39%9.8CVE-2018-18628Pippo deserialization of untrusted data vulnerabilityAn issue was discovered in Pippo 1.11.0. The function SerializationSessionDataTranscoder.decode() calls ObjectInputStream.readObject() to deserialize…EPSS 5.5%9.8CVE-2018-18240Pippo deserialization of untrusted data vulnerabilityPippo through 1.11.0 allows remote code execution via a command to java.lang.ProcessBuilder because the XstreamEngine component does not use XStream'…EPSS 3.7%

Source: NIST National Vulnerability Database (record CVE-2019-5442), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.