CVE-2022-51026
Bytebase 0.12.0 before 1.0.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to log in as any user.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 4.0
- 9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.61% probability · 49th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-290
- Source
- disclosure@vulncheck.com
EPSS moved from 0.6% on 23 October 2026 to 0.6% on 26 October 2026.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.