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Servers and applications

CVE-2018-1000408

A denial of service vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier in core/src/main/java/hudson/security/HudsonPrivateSecurityRealm.java that allows attackers without Overall/Read permission to access a specific URL on instances using the built-in Jenkins user database security realm that results in the creation of an ephemeral user record in memory.

Severity
Medium 6.5
Published
9 Jan 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.5% in the next 30 daysHigher than 73% of CVEs. EPSS by FIRST, 10 Nov 2026
Attack
Over the network · No login needed · No user action needed
Attacker can
Change some data · Slow it down
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Sources
NVD

Affected software

SoftwareAffected versions
JenkinsServers and applications · cpe:a:jenkins:jenkins
  • Every version up to 2.138.1
  • Every version up to 2.145

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-1000408
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-1000408