CVE-2018-1999043

Name: CVE-2018-1999043
Creator: NVD / NIST
Published: 2018-08-23T18:29:00.577+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.67%

Last modified Jun 17, 2026

CVE-2018-1999043 is a vulnerability of currently unknown severity. A denial of service vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in BasicAuthenticationFilter.java, BasicHeaderApiTokenAuthenticator.java that allows attackers to create ephemeral in-memory user records by attempting to log in using invalid credentials.. EPSS estimates a 1.67% chance of exploitation in the next 30 days.

Description

A denial of service vulnerability exists in Jenkins 2.137 and earlier, 2.121.2 and earlier in BasicAuthenticationFilter.java, BasicHeaderApiTokenAuthenticator.java that allows attackers to create ephemeral in-memory user records by attempting to log in using invalid credentials.

Metrics

EPSS Probability

1.67%

73.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-772

Affected Software

Vendor	Product	Versions
Jenkins	Jenkins	<= 2.121.2
Jenkins	Jenkins	<= 2.137

References

https://jenkins.io/security/advisory/2018-08-15/#SECURITY-672Vendor Advisory
https://jenkins.io/security/advisory/2018-08-15/#SECURITY-672Vendor Advisory

Timeline

Published: Aug 23, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1999043?

How severe is CVE-2018-1999043?

Severity scoring for CVE-2018-1999043 is pending analysis. The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1999043?

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-2018-1999043?

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

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Source: NVD / NIST