{"id":"CVE-2023-6688","summary":"Inefficient Regular Expression Complexity in GitLab","details":"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.","aliases":["BIT-gitlab-2023-6688"],"modified":"2026-04-10T05:07:41.451096Z","published":"2024-05-09T01:38:46.718Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/6xxx/CVE-2023-6688.json","cwe_ids":["CWE-1333"],"cna_assigner":"GitLab"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/6xxx/CVE-2023-6688.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6688"},{"type":"REPORT","url":"https://gitlab.com/gitlab-org/gitlab/-/issues/434854"},{"type":"REPORT","url":"https://hackerone.com/reports/2270362"},{"type":"PACKAGE","url":"git://git@gitlab.com:gitlab-org/gitlab.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.com/gitlab-org/gitlab","events":[{"introduced":"22834294718a25956b0a859c8eed72248300eeee"},{"fixed":"d210b947e3e51eebcbb24a9152f5c68f7e2b1d58"}]}],"versions":["v16.11.0-ee"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-6688.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}