Critical severity · published Oct 22, 2026
CVE-2022-51026
Bytebase 0.12.0 before 1.0.1 Authentication Bypass via GitLab Self-Hosted Login
New
9.8
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BY
bytebase · bytebase
0.12.0 before 1.0.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-51026
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-51026
github.com
https://github.com/bytebase/bytebase
github.com
https://github.com/bytebase/bytebase/blob/1.0.0/server/auth.go#L79-L93
github.com
https://github.com/bytebase/bytebase/commit/d69e682243b25b51dd52912a26e2f259b5f3db2d
github.com
https://github.com/bytebase/bytebase/pull/834
github.com
https://github.com/bytebase/bytebase/releases/tag/1.0.1
github.com
https://github.com/bytebase/bytebase/security/advisories/GHSA-5r3p-6rj5-7937
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