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Servers and applications

CVE-2018-1000409

A session fixation vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier in core/src/main/java/hudson/security/HudsonPrivateSecurityRealm.java that prevented Jenkins from invalidating the existing session and creating a new one when a user signed up for a new user account.

Severity
Medium 5.4
Published
9 Jan 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.2% in the next 30 daysHigher than 68% of CVEs. EPSS by FIRST, 10 Nov 2026
Weakness
Session fixation (CWE-384)
Attack
Over the network · No login needed · Needs someone to click or open something
Attacker can
Read some data · Change some data
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
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-2018-1000409
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-1000409