CVE-2018-1000193

Name: CVE-2018-1000193
Creator: NVD / NIST
Published: 2018-06-05T21:29:00.54+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 1.04%

Last modified Jun 17, 2026

CVE-2018-1000193 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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.. EPSS estimates a 1.04% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

1.04%

59.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Jenkins	Jenkins	<= 2.120
Jenkins	Jenkins	<= 2.107.2
Oracle	Communications Cloud Native Core Automated Test Suite	1.9.0

References

https://jenkins.io/security/advisory/2018-05-09/#SECURITY-786Vendor Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
https://jenkins.io/security/advisory/2018-05-09/#SECURITY-786Vendor Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory

Timeline

Published: Jun 5, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1000193?

How severe is CVE-2018-1000193?

CVE-2018-1000193 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 1.04% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1000193?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-1000193?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST