CVE-2018-18240: Pippo through 1.11.0 allows remote code execution via a command to java.lang.ProcessBuilder because the Xstrea

Q: How do I fix CVE-2018-18240?

pippo: upgrade to newer than 1.11.0. Exact commands for each OS are on this page.

Q: Is CVE-2018-18240 being exploited?

CVE-2018-18240 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-18240 affect?

CVE-2018-18240 affects pippo. Severity is critical (CVSS 9.8). Pippo through 1.11.0 allows remote code execution via a command to java.lang.ProcessBuilder because the XstreamEngine component does not use XStream's available protection mechanisms to restrict unmarshalling.

Q: How urgent is CVE-2018-18240?

Priority 67/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-18240 is a critical-severity flaw (CVSS 9.8) affecting pippo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Pippo through 1.11.0 allows remote code execution via a command to java.lang.ProcessBuilder because the XstreamEngine component does not use XStream's available protection mechanisms to restrict unmarshalling.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.7% (top 10%)
CISA exploited list	No
Weakness	CWE-502
Published	2018-10-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: pippo

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-10-11 07:29 UTCPublished CVE record published
2026-06-17 01:46 UTCUpdated Record last modified

pippo pippo UPGRADE

Affected: <= 1.11.0

Fixed in: newer than 1.11.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pippo || rpm -q pippo || pippo --version

2. UPGRADE to newer than 1.11.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pippo

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pippo

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-18240?

pippo: upgrade to newer than 1.11.0. Exact commands for each OS are on this page.

Is CVE-2018-18240 being exploited?

CVE-2018-18240 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-18240 affect?

CVE-2018-18240 affects pippo. Severity is critical (CVSS 9.8). Pippo through 1.11.0 allows remote code execution via a command to java.lang.ProcessBuilder because the XstreamEngine component does not use XStream's available protection mechanisms to restrict unmarshalling.

How urgent is CVE-2018-18240?

Priority 67/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Java vulnerabilities

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References

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