How severe is CVE-2019-15593?

CVE-2019-15593 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 none, integrity none, and availability high.

Is CVE-2019-15593 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15593?

CVE-2019-15593 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-2019-15593?

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

When was CVE-2019-15593 published?

CVE-2019-15593 was published on 2019-11-22 and last updated on 2026-06-17.

CVE-2019-15593

CVE-2019-15593 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Gitlab
Published: 2019-11-22
Last modified: 2026-06-17

Description

GitLab 12.2.3 contains a security vulnerability that allows a user to affect the availability of the service through a Denial of Service attack in Issue Comments.

Frequently asked questions

What is CVE-2019-15593?: GitLab 12.2.3 contains a security vulnerability that allows a user to affect the availability of the service through a Denial of Service attack in Issue Comments.
How severe is CVE-2019-15593?: CVE-2019-15593 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 none, integrity none, and availability high.
Is CVE-2019-15593 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15593?: CVE-2019-15593 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-2019-15593?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-15593 published?: CVE-2019-15593 was published on 2019-11-22 and last updated on 2026-06-17.

References

https://hackerone.com/reports/557154

Affected products (2)

cpe:2.3:a:gitlab:gitlab:12.2.3:*:*:*:community:*:*:*
cpe:2.3:a:gitlab:gitlab:12.2.3:*:*:*:enterprise:*:*:*

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