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Status published
Medium
CVE-2023-6688
Inefficient Regular Expression Complexity in GitLab
Vulnerability Description
An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.11 prior to 16.11.2. A problem with the processing logic for Google Chat Messages integration may lead to a regular expression DoS attack on the server.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Thanks to `Anonymizer` for reporting this vulnerability through our HackerOne bug bounty program.
References
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CVE-2025-9825
Missing Authorization in GitLab
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5
CVE-2025-9642
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
High
8.7
CVE-2025-9484
Missing Authorization in GitLab
Medium
4.3
Affected Vendor
GitLab
View all reports →Affected Software
GitLab
Vulnerable Versions:
16.11
Timeline
Official Publish:
May 9th, 2024
Last Modified:
October 3rd, 2024
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H