What’s Vulnerable › Vulnerabilities

CVE-2023-6682: Inefficient Regular Expression Complexity in GitLab

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-14 · updated 2026-06-17
• Weakness: CWE-1333

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.9 prior to 16.9.7, starting from 16.10 prior to 16.10.5, and starting from 16.11 prior to 16.11.2. A problem with the processing logic for Discord Integrations Chat Messages can lead to a regular expression DoS attack on the server.

Affected products

• GitLab: from 16.9.0 before 16.9.7; from 16.10.0 before 16.10.5; from 16.11.0 before 16.11.2 — fixed in 16.10.5, 16.11.2, 16.9.7

How to fix

Upgrade to a fixed version: GitLab 16.10.5, 16.11.2, 16.9.7. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/gitlab/-/issues/434821
• https://hackerone.com/reports/2269012
• https://gitlab.com/gitlab-org/gitlab/-/issues/434821
• https://hackerone.com/reports/2269012

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