CVE-2022-51026
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductGithub.com/bytebase/bytebase
PublishedOct 22, 2026
First seenOct 22, 2026
Weakness typeCWE-290CWE-290
How to fix
Update
- github.com/bytebase/bytebase1.0.1 or later
Patches
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/bytebase/bytebaseGo | v < 1.0.1 | 1.0.1 |
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