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CVE-2018-1999043

26
FAUCET Score

CVE-2018-1999043 is a denial of service vulnerability affecting Jenkins versions 2.137 and earlier, and 2.121.2 and earlier. Attackers can exploit this by attempting to log in with invalid credentials, leading to the creation of ephemeral in-memory user records that consume resources. Rated 7.5 HIGH, this vulnerability has a low attack complexity and can be exploited remotely without authentication, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.121.2CPE matchmatch criteria
cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*
<= 2.137CPE matchmatch criteria
cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.67%
Probability of exploitation in next 30 days
EPSS Percentile
74.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0167 is in the 57th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (30)

mavenpatch availablevia ghsa
Product: org.jenkins-ci.main:jenkins-coreFixed in: 2.121.3
mavenpatch availablevia ghsa
Product: org.jenkins-ci.main:jenkins-coreFixed in: 2.138
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: atomic-enterprise-service-catalog-1:3.11.51-1.git.1671.2d16650.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: atomic-openshift-0:3.11.51-1.git.0.1560686.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: atomic-openshift-cluster-autoscaler-0:3.11.51-1.git.0.0aa9fc2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: atomic-openshift-descheduler-0:3.11.51-1.git.300.89070e8.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: atomic-openshift-dockerregistry-0:3.11.51-1.git.446.d29ce0e.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: atomic-openshift-metrics-server-0:3.11.51-1.git.52.03e3a91.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: atomic-openshift-node-problem-detector-0:3.11.51-1.git.254.22189b0.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: atomic-openshift-service-idler-0:3.11.51-1.git.14.813574a.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: atomic-openshift-web-console-0:3.11.51-1.git.324.0ae64ed.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: cri-o-0:1.11.10-1.rhaos3.11.git42c86f0.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: golang-github-openshift-oauth-proxy-0:3.11.51-1.git.419.1af74df.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: golang-github-prometheus-alertmanager-0:3.11.51-1.git.0.50a0687.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: golang-github-prometheus-node_exporter-0:3.11.51-1.git.1063.12dd8be.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: golang-github-prometheus-prometheus-0:3.11.51-1.git.5023.0ad933c.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: jenkins-0:2.138.2.1542054911-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: jenkins-2-plugins-0:3.11.1542061886-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: kibana-0:5.6.13-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: openshift-ansible-0:3.11.51-2.git.0.51c90a3.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: openshift-enterprise-autoheal-0:3.11.51-1.git.219.8ea4275.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: openshift-enterprise-cluster-capacity-0:3.11.51-1.git.380.ffa21af.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: openshift-monitor-project-lifecycle-0:3.11.51-1.git.59.7b59e29.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 3.11Fixed in: openshift-monitor-sample-app-0:3.11.51-1.git.5.f6d0188.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 3.10Fixed in: jenkins
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 3.4Fixed in: jenkins
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 3.5Fixed in: jenkins
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 3.6Fixed in: jenkins
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 3.7Fixed in: jenkins
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 3.9Fixed in: jenkins

Vendor Advisories (2)

mavenGHSA-2632-h32j-6rg9high

Missing Release of Resource after Effective Lifetime in Jenkins

May 13, 2022
redhatCVE-2018-1999043Moderate

jenkins: Ephemeral user record was created on some invalid authentication attempts

Aug 15, 2018

References

jenkins.io / security/advisory/2018-08-15
Vendor Advisory