Vulnerability record · CVE-2018-1999001 · published 23 July 2018

CVE-2018-1999001: Jenkins vulnerability

Jenkins · Jenkins

A unauthorized modification of configuration vulnerability exists in Jenkins 2.132 and earlier, 2.121.1 and earlier in User.java that allows attackers to provide crafted login credentials that cause Jenkins to move the config.xml file from the Jenkins home directory. If Jenkins is started without this file present, it will revert to the legacy defaults of granting administrator access to anonymous users.

8.8 CVSS 3.1 High EPSS 18% · top 2.9%

8.8CVSS 3.1 base score, v2 4.3

18%EPSS exploitation probability, 30 days

NoNot in CISA KEV

2Affected product versions listed by NVD

4References

17 Jun 2026Last modified by NVD

Description

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Jenkins Jenkins

Communications Cloud Native Core Automated Test Suite Oracle

References

Link	Tags
https://jenkins.io/security/advisory/2018-07-18/#SECURITY-897	MitigationVendor Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	PatchThird Party Advisory
https://jenkins.io/security/advisory/2018-07-18/#SECURITY-897	MitigationVendor Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	PatchThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-1999001), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.