CVE-2026-126937
Zipline before 4.6.5 TOCTOU Race Condition via /api/setup
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
Zipline before 4.6.5 contains a TOCTOU race condition in the POST /api/setup endpoint that allows unauthenticated attackers to create multiple SUPERADMIN accounts by racing concurrent requests before the firstSetup flag is reset. Attackers can send simultaneous requests with spoofed X-Forwarded-For headers during the argon2 hashing window to gain full administrative control of the instance.
| CWE | CWE-367 |
| Vendor | diced |
| Product | zipline |
| Published | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
diced / zipline
0 < 4.6.5
References
Credits
🔍 EQSTLab min8282