How severe is CVE-2018-16959?

CVE-2018-16959 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2018-16959 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16959?

CVE-2018-16959 affects Oracle Webcenter Interaction. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-16959?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-16959 published?

CVE-2018-16959 was published on 2018-09-18 and last updated on 2026-06-17.

CVE-2018-16959

CVE-2018-16959 is a medium-severity vulnerability in Oracle Webcenter Interaction with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Oracle Webcenter Interaction
Published: 2018-09-18
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2018-16959?: CVE-2018-16959 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2018-16959 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16959?: CVE-2018-16959 affects Oracle Webcenter Interaction. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-16959?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-16959 published?: CVE-2018-16959 was published on 2018-09-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:oracle:webcenter_interaction:10.3.3:*:*:*:*:*:*:*

More vulnerabilities in Oracle Webcenter Interaction

CVE-2018-16957 — Critical (CVSS 9.8): The Oracle WebCenter Interaction 10.3.3 search service queryd.exe binary is compiled with the i1g2s3c4 hardcoded…
CVE-2018-16952 — High (CVSS 8.8): The Oracle WebCenter Interaction Portal 10.3.3 does not implement protection against Cross-site Request Forgery in its…
CVE-2018-16956 — Medium (CVSS 6.5): The AjaxControl component of Oracle WebCenter Interaction Portal 10.3.3 does not validate the names of pages when…
CVE-2018-16955 — Medium (CVSS 6.1): The login function of Oracle WebCenter Interaction Portal 10.3.3 is vulnerable to reflected cross-site scripting (XSS).…
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CVE-2018-16953 — Medium (CVSS 6.1): The AjaxView::DisplayResponse() function of the portalpages.dll assembly in Oracle WebCenter Interaction Portal 10.3.3…

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