CVE-2016-4000 — Deserialization of Untrusted Data in...
Deserialization of Untrusted Data in Jython
Summary
Advisory Timeline
- First published May 13, 2022 (1613 days ago).
- Last revised July 2, 2026 — 1512 days after initial publication.
Remediation
Upgrade to the fixed version using your package manager.
<!-- Update pom.xml dependency version to 2.7.1b3 for org.python:jython-standalone -->
<!-- Update pom.xml dependency version to 2.7.1b3 for org.python:jython -->
After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.
Affected Packages (2)
Affects 1 ecosystem: maven (2).
| Package | Ecosystem | Affected | Fixed In |
|---|---|---|---|
| org.python:jython-standalone | maven | 2.5.1, 2.5.2, 2.5.3, 2.5.3-rc1 (+11 more) | 2.7.1b3 |
| org.python:jython | maven | 2.2, 2.2-beta1, 2.2-beta2, 2.2-rc1 (+16 more) | 2.7.1b3 |
Vulnerability Classification
Common Weakness Enumeration (CWE) identifiers for this vulnerability type.
- CWE-502Deserialization of Untrusted DataMITRE
CVSS Score Breakdown
What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://nvd.nist.gov/vuln/detail/CVE-2016-4000ADVISORY
- https://github.com/jython/jython/commit/ee4200fdd5385d3f74a5cf1a781fa52d33bbb274WEB
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlWEB
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.htmlWEB
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlWEB
- https://www.oracle.com/security-alerts/cpujul2020.htmlWEB
- https://www.oracle.com/security-alerts/cpujan2020.htmlWEB
- https://www.oracle.com/security-alerts/cpuapr2020.htmlWEB
- https://snyk.io/vuln/SNYK-JAVA-ORGPYTHON-31451WEB
- https://security.gentoo.org/glsa/201710-28WEB
- https://security-tracker.debian.org/tracker/CVE-2016-4000WEB
- https://lists.apache.org/thread.html/0919ec1db20b1022f22b8e78f355667df74d6142b463ff17d03ad533@%3Cdevnull.infra.apache.org%3EWEB
- https://hg.python.org/jython/rev/d06e29d100c0WEB
- https://hg.python.org/jython/file/v2.7.1rc1/NEWSWEB
- https://github.com/jython/jythonPACKAGE
- https://bugs.jython.org/issue2454WEB
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864859WEB
- https://www.debian.org/security/2017/dsa-3893WEB
- https://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlWEB
Frequently Asked Questions
- What is CVE-2016-4000?
- Deserialization of Untrusted Data in Jython This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
- How do I check if my project is affected by CVE-2016-4000?
- CVE-2016-4000 affects org.python:jython-standalone and org.python:jython. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2016-4000 and 200,000+ other known vulnerabilities.
Severity & Exploitability
Exploitation is straightforward and causes maximum impact. Patch immediately.
Also Known As
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