CVE-2018-1999042
Deserialization of Untrusted Data in Jenkins
A vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in XStream2.java that allows attackers to have Jenkins resolve a domain name when deserializing an instance of java.net.URL.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in XStream2.java that allows attackers to have Jenkins resolve a domain name when deserializing an instance of java.net.URL.
- Record
CVE-2018-1999042- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-502
- Updated
- 2026-11-02
CVE List No score
A vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in XStream2.java that allows attackers to have Jenkins resolve a domain name when deserializing an instance of java.net.URL.
- Record
CVE-2018-1999042- Updated
- 2026-11-02
EUVDEUVD-2022-1940 No score
A vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in XStream2.java that allows attackers to have Jenkins resolve a domain name when deserializing an instance of java.net.URL.
- Record
EUVD-2022-1940- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-28p3-mchr-9frj
Deserialization of Untrusted Data in Jenkins
A vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in XStream2.java that allows attackers to have Jenkins resolve a domain name when deserializing an instance of java.net.URL.
- Record
GHSA-28p3-mchr-9frj- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-502
- Updated
- 2026-11-02
OSV
A vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in XStream2.java that allows attackers to have Jenkins resolve a domain name when deserializing an instance of java.net.URL.
- Record
CVE-2018-1999042- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-28p3-mchr-9frj
Deserialization of Untrusted Data in Jenkins
A vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in XStream2.java that allows attackers to have Jenkins resolve a domain name when deserializing an instance of java.net.URL.
- Record
GHSA-28p3-mchr-9frj- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.jenkins-ci.main:jenkins-coreMaven |
before 2.121.3 | 2.121.3 |
org.jenkins-ci.main:jenkins-coreMaven |
2.122 up to 2.138 | 2.138 |
org.jenkins-ci.main:jenkins-coreMaven |
before 2.121.3, plus listed versions 1.3961.3971.3981.3991.400 Show 45 moreShow less1.4011.4031.4041.4051.4061.4071.4081.4091.409.11.409.21.409.31.4101.4111.4121.4131.4141.4151.4161.4171.4181.4191.4201.4211.4221.4231.4241.424.11.424.21.424.31.424.41.424.51.424.61.4251.4261.4271.4281.4291.4301.4311.4321.4331.4341.4351.4361.437 |
2.121.3 |
org.jenkins-ci.main:jenkins-coreMaven |
2.122 up to 2.138, plus listed versions 2.1232.1242.1252.1262.127 Show 10 moreShow less2.1282.1292.1302.1312.1322.1332.1342.1352.1362.137 |
2.138 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-1999042 is a medium vulnerability (CVSS 5.3) in Jenkins, published August 23, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.46%, the 73rd percentile. Fixed in org.jenkins-ci.main:jenkins-core 2.121.3.
References
Left out here: 430 versions. The JSON record has them.