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Servers and applications

CVE-2018-1000193

A improper neutralization of control sequences vulnerability exists in Jenkins 2.120 and older, LTS 2.107.2 and older in HudsonPrivateSecurityRealm.java that allows users to sign up using user names containing control characters that can then appear to have the same name as other users, and cannot be deleted via the UI.

Severity
Medium 4.3
Published
5 Jun 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1% in the next 30 daysHigher than 63% of CVEs. EPSS by FIRST, 10 Nov 2026
Weakness
Injection (CWE-74)
Attack
Over the network · Needs a user account · No user action needed
Attacker can
Change some data
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Sources
NVD

Affected software

SoftwareAffected versions
JenkinsServers and applications · cpe:a:jenkins:jenkins
  • Every version up to 2.120
  • Every version up to 2.107.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-1000193
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-1000193