How severe is CVE-2019-15731?

CVE-2019-15731 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 none, integrity low, and availability none.

Is CVE-2019-15731 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-2019-15731?

CVE-2019-15731 primarily affects Gitlab. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-15731?

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

When was CVE-2019-15731 published?

CVE-2019-15731 was published on 2019-09-16 and last updated on 2026-06-17.

CVE-2019-15731

CVE-2019-15731 is a medium-severity vulnerability in Gitlab 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-918.

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-918
Affected product: Gitlab
Published: 2019-09-16
Last modified: 2026-06-17

Description

An issue was discovered in GitLab Community and Enterprise Edition 12.0 through 12.2.1. Non-members were able to comment on merge requests despite the repository being set to allow only project members to do so.

Frequently asked questions

What is CVE-2019-15731?: An issue was discovered in GitLab Community and Enterprise Edition 12.0 through 12.2.1. Non-members were able to comment on merge requests despite the repository being set to allow only project members to do so.
How severe is CVE-2019-15731?: CVE-2019-15731 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 none, integrity low, and availability none.
Is CVE-2019-15731 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-2019-15731?: CVE-2019-15731 primarily affects Gitlab. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-15731?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-15731 published?: CVE-2019-15731 was published on 2019-09-16 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*

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