CVE-2022-51026

CVSS 9.8 (critical) · published 2026-10-22

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/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.

Weakness: CWE-290

Source: NVD CVE-2022-51026

References

• https://github.com/bytebase/bytebase
• https://github.com/bytebase/bytebase/blob/1.0.0/server/auth.go#L79-L93
• https://github.com/bytebase/bytebase/commit/d69e682243b25b51dd52912a26e2f259b5f3db2d
• https://github.com/bytebase/bytebase/pull/834
• https://github.com/bytebase/bytebase/releases/tag/1.0.1
• https://github.com/bytebase/bytebase/security/advisories/GHSA-5r3p-6rj5-7937
• https://www.vulncheck.com/advisories/bytebase-0.12.0-before-1.0.1-authentication-bypass-via-gitlab-self-hosted-login

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