CVE-2018-1000409

Name: CVE-2018-1000409
Creator: NVD / NIST
Published: 2019-01-09T23:29:02.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.22%

Last modified Jun 17, 2026

CVE-2018-1000409 is a vulnerability of currently unknown severity. A session fixation vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier in core/src/main/java/hudson/security/HudsonPrivateSecurityRealm.java that prevented Jenkins from invalidating the existing session and creating a new one when a user signed up for a new user account.. EPSS estimates a 1.22% chance of exploitation in the next 30 days.

Description

A session fixation vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier in core/src/main/java/hudson/security/HudsonPrivateSecurityRealm.java that prevented Jenkins from invalidating the existing session and creating a new one when a user signed up for a new user account.

Metrics

EPSS Probability

1.22%

64.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-384

Affected Software

Vendor	Product	Versions
Jenkins	Jenkins	<= 2.138.1
Jenkins	Jenkins	<= 2.145

References

http://www.securityfocus.com/bid/106532Third Party Advisory, VDB Entry
https://jenkins.io/security/advisory/2018-10-10/#SECURITY-1158Vendor Advisory
http://www.securityfocus.com/bid/106532Third Party Advisory, VDB Entry
https://jenkins.io/security/advisory/2018-10-10/#SECURITY-1158Vendor Advisory

Timeline

Published: Jan 9, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1000409?

How severe is CVE-2018-1000409?

Severity scoring for CVE-2018-1000409 is pending analysis. The EPSS model estimates a 1.22% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1000409?

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-2018-1000409?

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

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Source: NVD / NIST