What is CVE-2018-1896?

CVE-2018-1896 is a medium-severity vulnerability in IBM Connections, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.6/10. Published 2018-12-07.

How severe is CVE-2018-1896?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Vulnerability in IBM Connections

CVE-2018-1896

IBM Connections 5.0, 5.5, and 6.0 is vulnerable to possible host header injection attack that could cause navigation to the attacker's domain. IBM X-Force ID: 152456.

Published 2018-12-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.010 (60.5th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

IBM Connections — versions 5.5, 5.0, 6.0

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

exchange.xforce.ibmcloud.com/vulnerabilities/152456 (VDB Entry, vdb-entry, Vendor Advisory)
www.ibm.com/support/docview.wss (Patch, Vendor Advisory)
www.securityfocus.com/bid/106197 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-1896?: CVE-2018-1896 is a medium-severity vulnerability in IBM Connections, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.6/10. Published 2018-12-07.
How severe is CVE-2018-1896?: Medium severity. CVSS v3 base score is 4.6 out of 10.