CVE-2018-1999045
Improper Authentication in Jenkins
A improper authentication vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in SecurityRealm.java, TokenBasedRememberMeServices2.java that allows attackers with a valid cookie to remain logged in even if that feature is disabled.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A improper authentication vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in SecurityRealm.java, TokenBasedRememberMeServices2.java that allows attackers with a valid cookie to remain logged in even if that feature is disabled.
- Record
CVE-2018-1999045- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - CVSS 2.0
- 5.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
CVE List No score
A improper authentication vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in SecurityRealm.java, TokenBasedRememberMeServices2.java that allows attackers with a valid cookie to remain logged in even if that feature is disabled.
- Record
CVE-2018-1999045- Updated
- 2026-11-02
EUVDEUVD-2022-4877 No score
A improper authentication vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in SecurityRealm.java, TokenBasedRememberMeServices2.java that allows attackers with a valid cookie to remain logged in even if that feature is disabled.
- Record
EUVD-2022-4877- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-q4cq-r7hg-pxqq
Improper Authentication in Jenkins
A improper authentication vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in SecurityRealm.java, TokenBasedRememberMeServices2.java that allows attackers with a valid cookie to remain logged in even if that feature is disabled.
- Record
GHSA-q4cq-r7hg-pxqq- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
OSV
A improper authentication vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in SecurityRealm.java, TokenBasedRememberMeServices2.java that allows attackers with a valid cookie to remain logged in even if that feature is disabled.
- Record
CVE-2018-1999045- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-q4cq-r7hg-pxqq
Improper Authentication in Jenkins
A improper authentication vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in SecurityRealm.java, TokenBasedRememberMeServices2.java that allows attackers with a valid cookie to remain logged in even if that feature is disabled.
- Record
GHSA-q4cq-r7hg-pxqq- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-287
- 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-2018-1999045 is a medium vulnerability (CVSS 5.4) in Jenkins, published August 23, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.87%, the 59th percentile. Fixed in org.jenkins-ci.main:jenkins-core 2.121.3.
References
jenkins.io/security/advisory/2018-08-15
nvd.nist.gov/vuln/detail/CVE-2018-1999045
github.com/jenkinsci/jenkins/commit/24d350d8a6f033bf32c94b3f7cca2d1ab2f9df03
Left out here: 430 versions. The JSON record has them.