CVE-2019-4186

Name: CVE-2019-4186
Creator: NVD / NIST
Published: 2019-09-05T15:15:12.97+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.58%

Last modified Jun 17, 2026

CVE-2019-4186 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. IBM Jazz for Service Management 1.1.3 is vulnerable to HTTP header injection, caused by incorrect trust in the HTTP Host header during caching. By sending a specially crafted HTTP GET request, a remote attacker could exploit this vulnerability to inject arbitrary HTTP headers, which will allow the attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking. EPSS estimates a 1.58% chance of exploitation in the next 30 days.

Description

IBM Jazz for Service Management 1.1.3 is vulnerable to HTTP header injection, caused by incorrect trust in the HTTP Host header during caching. By sending a specially crafted HTTP GET request, a remote attacker could exploit this vulnerability to inject arbitrary HTTP headers, which will allow the attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking. IBM X-force ID: 158976.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

1.58%

72.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Ibm	Jazz For Service Management	1.1.3

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/158976VDB Entry, Vendor Advisory
https://supportcontent.ibm.com/support/pages/node/1071966Permissions Required
https://exchange.xforce.ibmcloud.com/vulnerabilities/158976VDB Entry, Vendor Advisory
https://supportcontent.ibm.com/support/pages/node/1071966Permissions Required

Timeline

Published: Sep 5, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-4186?

How severe is CVE-2019-4186?

CVE-2019-4186 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.58% probability of exploitation in the next 30 days.

How do I fix CVE-2019-4186?

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-2019-4186?

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

Scan your code now

Source: NVD / NIST