What is CVE-2018-16959?

CVE-2018-16959 is a medium-severity vulnerability in Oracle Webcenter Interaction, classified under Information Disclosure. CVSS score: 5.3/10. Published 2018-09-18.

How severe is CVE-2018-16959?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in Oracle Webcenter Interaction

CVE-2018-16959

An issue was discovered in Oracle WebCenter Interaction Portal 10.3.3. The portal component is delivered with an insecure default User Profile community configuration that allows anonymous users to retrieve the account names of all portal users via /portal/server.pt/user/user/ requests. When WCI is synchronised with Active Directory (AD), this vulnerability can expose the account names of all AD users. NOTE: this CVE is assigned by MITRE and isn't validated by Oracle because Oracle WebCenter Interaction Portal is out of support.

Vulnerability class: Information Disclosure

Published 2018-09-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.012 (68.0th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Oracle Webcenter Interaction — versions 10.3.3

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

seclists.org/fulldisclosure/2018/Sep/22 (Mailing List, Third Party Advisory)
www.securityfocus.com/bid/105350 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-16959?: CVE-2018-16959 is a medium-severity vulnerability in Oracle Webcenter Interaction, classified under Information Disclosure. CVSS score: 5.3/10. Published 2018-09-18.
How severe is CVE-2018-16959?: Medium severity. CVSS v3 base score is 5.3 out of 10.