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CVE-2018-1999045

20
FAUCET Score

CVE-2018-1999045 describes an improper authentication vulnerability in Jenkins versions 2.137 and earlier, and 2.121.2 and earlier. This flaw allows an attacker with a valid cookie to maintain a logged-in session even if the "remember me" feature is disabled. The vulnerability has a CVSS v3 score of 5.4 (MEDIUM), indicating a low attack complexity and requiring low privileges, with potential for low impact on confidentiality and integrity. The attack vector is network-based. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal.

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

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.87%
Probability of exploitation in next 30 days
EPSS Percentile
55.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0087 is in the 67th percentile among its peer group of 21,974 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (11)

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
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 3.10Fixed in: jenkins
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 3.2Fixed in: jenkins
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 3.3Fixed in: jenkins
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 3.4Fixed in: jenkins
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 3.5Fixed in: jenkins
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 3.6Fixed in: jenkins
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 3.7Fixed in: jenkins
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 3.9Fixed in: jenkins
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Enterprise 3.1Fixed in: jenkins

Vendor Advisories (2)

mavenGHSA-q4cq-r7hg-pxqqmedium

Improper Authentication in Jenkins

May 14, 2022
redhatCVE-2018-1999045Low

jenkins: "Remember me" cookie was evaluated even if that feature is disabled

Aug 15, 2018

References

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