{"id":"CVE-2022-51026","title":"Bytebase 0.12.0 before 1.0.1 Authentication Bypass via GitLab Self-Hosted Login","summary":"Bytebase 0.12.0 before 1.0.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to log in as any user. The flaw stems from trusting client-supplied GitLab provider configuration in the POST /api/auth/lo…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-290"],"vendor":"bytebase","product":"bytebase","affected":["bytebase >= 0.12.0 < 1.0.1"],"published":"2026-10-22","updated":"2026-10-22","sourceUpdated":"2026-10-22T19:13:18.259Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-51026","references":[{"url":"https://github.com/bytebase/bytebase/security/advisories/GHSA-5r3p-6rj5-7937","label":"GitHub Security Advisory (GHSA-5r3p-6rj5-7937)"},{"url":"https://github.com/bytebase/bytebase/commit/d69e682243b25b51dd52912a26e2f259b5f3db2d"},{"url":"https://github.com/bytebase/bytebase/pull/834"},{"url":"https://github.com/bytebase/bytebase/blob/1.0.0/server/auth.go#L79-L93"},{"url":"https://github.com/bytebase/bytebase/releases/tag/1.0.1","label":"bytebase 1.0.1 Release Notes"},{"url":"https://github.com/bytebase/bytebase"},{"url":"https://www.vulncheck.com/advisories/bytebase-0.12.0-before-1.0.1-authentication-bypass-via-gitlab-self-hosted-login","label":"VulnCheck Advisory: Bytebase 0.12.0 before 1.0.1 Authentication Bypass via GitLab Self-Hosted Login"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T22:00:50.394Z","slug":"CVE-2022-51026","body":"## Overview\n\nBytebase 0.12.0 before 1.0.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to log in as any user. The flaw stems from trusting client-supplied GitLab provider configuration in the POST /api/auth/login/GITLAB_SELF_HOST endpoint. Attackers can set instanceUrl to a server they control that returns an active user with a chosen email. Bytebase then issues session tokens for that principal, letting attackers impersonate existing users including the Owner or create new members.\n\n## Affected\n\n- `bytebase >= 0.12.0 < 1.0.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}