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Vulnerabilities / CVE-2016-4000

critical

CVE-2016-4000

jython: Unsafe deserialization leads to code execution

Published Modified CWE 502
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GHSA9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat8.1CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, GHSA. Rated lower by Red Hat (high), Ubuntu (medium).

Description

Jython before 2.7.1rc1 allows attackers to execute arbitrary code via a crafted serialized PyFunction object.

Affected packages and fixed versions

SourcePackageFixed in
maven::GitHub Security Advisory Mavenorg.python:jython, org.python:jython-standalone2.7.1b3
debian 11jython2.5.3-17
debian 12jython2.5.3-17
debian 13jython2.5.3-17
debian 14jython2.5.3-17
debian 7jython2.5.2-1+deb7u1
debian 8jython2.5.3-3+deb8u1
debian 9jython2.5.3-16+deb9u1
echojython2.5.3-17
ubuntu 14.04jython2.5.3-1ubuntu0.1
ubuntu 16.04jython2.5.3-9ubuntu0.1
ubuntu 16.04-ESMjython2.5.3-9ubuntu0.1
Show all 14 entries from 13 sources
SourcePackageFixed in
maven::GitHub Security Advisory Mavenorg.python:jython2.7.1b3
maven::GitHub Security Advisory Mavenorg.python:jython-standalone2.7.1b3
debian 11jython2.5.3-17
debian 12jython2.5.3-17
debian 13jython2.5.3-17
debian 14jython2.5.3-17
debian 7jython2.5.2-1+deb7u1
debian 8jython2.5.3-3+deb8u1
debian 9jython2.5.3-16+deb9u1
echojython2.5.3-17
ubuntu 14.04jython2.5.3-1ubuntu0.1
ubuntu 16.04jython2.5.3-9ubuntu0.1
ubuntu 16.04-ESMjython2.5.3-9ubuntu0.1
ubuntu 17.04jython2.5.3-15ubuntu0.1

References

All 23 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.