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CVE-2018-1999043 Jenkins

Affected softwareJenkins
Severity7.5 High CVSS 3.0 2 scores
Fixed in2.121.3, 2.138
WeaknessCWE-772
Published23 Aug 2018
Updated17 Jun 2026

Description

A denial of service vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in BasicAuthenticationFilter.java, BasicHeaderApiTokenAuthenticator.java that allows attackers to create ephemeral in-memory user records by attempting to log in using invalid credentials.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 8 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 1.7% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

CVSS

7.5 HIGH v3.0 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.0 7.5 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.jenkins-ci.main:jenkins-core 0 2.121.3 unbounded
org.jenkins-ci.main:jenkins-core 2.122 2.138 unbounded

Products and versions

2 products, 4 version entries
SourceVendorProductSchemeAffected versions
nvd jenkins jenkins generic ≤ 2.121.2 · ≤ 2.137
osv org.jenkins-ci.main jenkins-core generic < 2.121.3 · ≥ 2.122 and < 2.138

References

URLTags
https://github.com/jenkinsci/jenkins PACKAGE
https://jenkins.io/security/advisory/2018-08-15/#SECURITY-672 WEB

Timeline

Published2018-08-23By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.