{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-6552: Authorization Bypass Through User-Controlled Key in GitLab","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-6552","status":"final","version":"1","initial_release_date":"2026-06-11T10:20:21.427Z","current_release_date":"2026-06-12T03:55:25.275Z","revision_history":[{"date":"2026-06-11T10:20:21.427Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"GitLab has remediated an issue in GitLab EE affecting all versions from 15.5 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with group Owner role to take over another group member's GitLab account due to improper authorization in the Group SAML identity management functionality.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-6552 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-6552"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-6552"},{"category":"external","summary":"gitlab.com","url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/597295"},{"category":"external","summary":"HackerOne Bug Bounty Report #3655189","url":"https://hackerone.com/reports/3655189"},{"category":"external","summary":"about.gitlab.com","url":"https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/"}]},"product_tree":{"branches":[{"category":"vendor","name":"GitLab","branches":[{"category":"product_name","name":"GitLab","branches":[{"category":"product_version_range","name":">=15.5 <18.10.8","product":{"name":"GitLab GitLab >=15.5 <18.10.8","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=18.11 <18.11.5","product":{"name":"GitLab GitLab >=18.11 <18.11.5","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=19.0 <19.0.2","product":{"name":"GitLab GitLab >=19.0 <19.0.2","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-6552","title":"Authorization Bypass Through User-Controlled Key in GitLab","notes":[{"category":"description","text":"GitLab has remediated an issue in GitLab EE affecting all versions from 15.5 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with group Owner role to take over another group member's GitLab account due to improper authorization in the Group SAML identity management functionality.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","baseScore":8.7,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 18.10.8, 18.11.5, 19.0.2.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3"]}]}]}