Description
bbs-go through 4.4.6 contains an authentication bypass vulnerability in the /api/login/google_one_tap endpoint that allows remote attackers to log in as other users by submitting Google ID tokens issued to any OAuth client. Attackers operating their own Google OAuth client can capture a victim's Google-signed ID token and replay it, since the aud claim is never checked, to obtain an authenticated session as the victim's Google-linked account.
Published: 2026-10-16
Score: 8.6 High
EPSS: n/a
KEV: No
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Remediation

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History

Fri, 16 Oct 2026 17:45:00 +0000

Type Values Removed Values Added
Description bbs-go through 4.4.6 contains an authentication bypass vulnerability in the /api/login/google_one_tap endpoint that allows remote attackers to log in as other users by submitting Google ID tokens issued to any OAuth client. Attackers operating their own Google OAuth client can capture a victim's Google-signed ID token and replay it, since the aud claim is never checked, to obtain an authenticated session as the victim's Google-linked account.
Title bbs-go through 4.4.6 Account Takeover via Google One Tap Login
First Time appeared Bbs-go Project
Bbs-go Project bbs-go
Weaknesses CWE-287
CPEs cpe:2.3:a:bbs-go_project:bbs-go:*:*:*:*:*:*:*:*
Vendors & Products Bbs-go Project
Bbs-go Project bbs-go
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Bbs-go Project Bbs-go
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-16T17:39:10.284Z

Reserved: 2026-10-16T14:31:13.324Z

Link: CVE-2026-111639

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-16T18:17:44.447

Modified: 2026-10-16T19:03:18.127

Link: CVE-2026-111639

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-16T19:30:13Z

Weaknesses