How severe is CVE-2019-15591?

CVE-2019-15591 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-15591 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15591?

CVE-2019-15591 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-2019-15591?

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

When was CVE-2019-15591 published?

CVE-2019-15591 was published on 2019-12-18 and last updated on 2026-06-17.

CVE-2019-15591

CVE-2019-15591 is a medium-severity vulnerability in Gitlab with a CVSS 3.x base score of 6.5. 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Gitlab
Published: 2019-12-18
Last modified: 2026-06-17

Description

An improper access control vulnerability exists in GitLab <12.3.3 that allows an attacker to obtain container and dependency scanning reports through the merge request widget even though public pipelines were disabled.

Frequently asked questions

What is CVE-2019-15591?: An improper access control vulnerability exists in GitLab <12.3.3 that allows an attacker to obtain container and dependency scanning reports through the merge request widget even though public pipelines were disabled.
How severe is CVE-2019-15591?: CVE-2019-15591 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-15591 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15591?: CVE-2019-15591 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-2019-15591?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-15591 published?: CVE-2019-15591 was published on 2019-12-18 and last updated on 2026-06-17.

References

https://hackerone.com/reports/676976

Affected products (2)

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

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