CVE-2020-13306

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-09-14 · updated 2026-06-17
Weakness: CWE-770

Description

A vulnerability was discovered in GitLab versions before 13.1.10, 13.2.8 and 13.3.4. GitLab Webhook feature could be abused to perform denial of service attacks due to the lack of rate limitation.

Affected products

GitLab: before 13.1.10; from 13.2.0 before 13.2.8; from 13.3.0 before 13.3.4 — fixed in 13.1.10, 13.2.8, 13.3.4

How to fix

Upgrade to a fixed version: GitLab 13.1.10, 13.2.8, 13.3.4. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13306.json
https://gitlab.com/gitlab-org/gitlab/-/issues/223681
https://hackerone.com/reports/904134
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13306.json
https://gitlab.com/gitlab-org/gitlab/-/issues/223681
https://hackerone.com/reports/904134

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