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Vulnerability record · CVE-2023-3364 · published 2 August 2023

CVE-2023-3364: Gitlab inefficient regular expression (redos) vulnerability

Gitlab · Gitlab

An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.14 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A Regular Expression Denial of Service was possible via sending crafted payloads which use AutolinkFilter to the preview_markdown endpoint.

7.5 CVSS 3.1 High EPSS 44% · top 1.3% CWE-1333 · Inefficient regular expression (ReDoS)
7.5CVSS 3.1 base score
44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.14 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A Regular Expression Denial of Service was possible via sending crafted payloads which use AutolinkFilter to the preview_markdown endpoint.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gitlab.com/gitlab-org/gitlab/-/issues/415995 Broken Link
https://hackerone.com/reports/1959727 Permissions Required
https://gitlab.com/gitlab-org/gitlab/-/issues/415995 Broken Link
https://hackerone.com/reports/1959727 Permissions Required

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-3364), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.