CVE-2018-1000863
CVSS v3
8.2
HIGH
EPSS Score
6.8 %
exploit probability, as of 2026-10-05
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A data modification vulnerability exists in Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in User.java, IdStrategy.java that allows attackers to submit crafted user names that can cause an improper migration of user record storage formats, potentially preventing the victim from logging into Jenkins.
Technical details
- Published
- 2018-12-10
Frequently asked questions
What is CVE-2018-1000863?
A data modification vulnerability exists in Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in User.java, IdStrategy.java that allows attackers to submit crafted user names that can cause an improper migration of user record storage formats, potentially preventing the victim from logging into Jenkins.
Is CVE-2018-1000863 actively exploited?
Active exploitation of CVE-2018-1000863 has not been confirmed. Its EPSS score was 6.8% on 2026-10-05, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-1000863?
CVE-2018-1000863 has a CVSS v3 base score of 8.2 (HIGH severity).
Is CVE-2018-1000863 affecting your environment?
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