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.
Published: 2026-10-22
Score: 9.3 Critical
EPSS: n/a
KEV: No
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Remediation

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History

Fri, 23 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
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.
Title Bytebase 0.12.0 before 1.0.1 Authentication Bypass via GitLab Self-Hosted Login
First Time appeared Bytebase
Bytebase bytebase
Weaknesses CWE-290
CPEs cpe:2.3:a:bytebase:bytebase:*:*:*:*:*:*:*:*
Vendors & Products Bytebase
Bytebase bytebase
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Bytebase Bytebase
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-22T19:13:18.259Z

Reserved: 2026-10-22T16:14:55.346Z

Link: CVE-2022-51026

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-22T19:17:30.883

Modified: 2026-10-22T19:17:30.883

Link: CVE-2022-51026

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T04:15:18Z

Weaknesses