How severe is CVE-2019-3990?

CVE-2019-3990 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2019-3990 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-3990?

CVE-2019-3990 primarily affects Linuxfoundation Harbor. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-3990?

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

When was CVE-2019-3990 published?

CVE-2019-3990 was published on 2019-12-03 and last updated on 2026-06-17.

CVE-2019-3990

CVE-2019-3990 is a medium-severity vulnerability in Linuxfoundation Harbor with a CVSS 3.x base score of 4.3. 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-269.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Linuxfoundation Harbor
Published: 2019-12-03
Last modified: 2026-06-17

Description

A User Enumeration flaw exists in Harbor. The issue is present in the "/users" API endpoint. This endpoint is supposed to be restricted to administrators. This restriction is able to be bypassed and information can be obtained about registered users can be obtained via the "search" functionality.

Frequently asked questions

What is CVE-2019-3990?: A User Enumeration flaw exists in Harbor. The issue is present in the "/users" API endpoint. This endpoint is supposed to be restricted to administrators. This restriction is able to be bypassed and information can be obtained about registered users can be obtained via the "search" functionality.
How severe is CVE-2019-3990?: CVE-2019-3990 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2019-3990 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-3990?: CVE-2019-3990 primarily affects Linuxfoundation Harbor. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-3990?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-3990 published?: CVE-2019-3990 was published on 2019-12-03 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:linuxfoundation:harbor:*:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:harbor:1.9.0:-:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:harbor:1.9.0:rc1:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:harbor:1.9.0:rc2:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:harbor:1.9.1:-:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:harbor:1.9.1:rc1:*:*:*:*:*:*

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