How severe is CVE-2018-20499?

CVE-2018-20499 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-20499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20499?

CVE-2018-20499 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-2018-20499?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-20499 published?

CVE-2018-20499 was published on 2019-12-30 and last updated on 2026-06-17.

CVE-2018-20499

CVE-2018-20499 is a high-severity vulnerability in Gitlab with a CVSS 3.x base score of 7.2. 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: High (CVSS 3.x base score 7.2)
CVSS v2: 6.4
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Gitlab
Published: 2019-12-30
Last modified: 2026-06-17

Description

An issue was discovered in GitLab Community and Enterprise Edition before 11.x before 11.4.13, 11.5.x before 11.5.6, and 11.6.x before 11.6.1. It allows SSRF.

Frequently asked questions

What is CVE-2018-20499?: An issue was discovered in GitLab Community and Enterprise Edition before 11.x before 11.4.13, 11.5.x before 11.5.6, and 11.6.x before 11.6.1. It allows SSRF.
How severe is CVE-2018-20499?: CVE-2018-20499 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-20499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20499?: CVE-2018-20499 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-2018-20499?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-20499 published?: CVE-2018-20499 was published on 2019-12-30 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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