CVE-2026-61628— nginx ignition has Unauthenticated Admin Account Creation via Onboarding Race Condition
一分钟漏洞结论
影响对象
lucasdillmann nginx-ignition
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
nginx ignition is a user interface for the nginx web server. Prior to version 2.41.1, is registered as anonymous (unauthenticated) and creates a user with full ReadWrite admin permissions. Because the handler uses a check-then-act (TOCTOU) pattern between the
影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| lucasdillmann | nginx-ignition | < 2.41.1 |
affected |
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一、 漏洞 CVE-2026-61628 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
nginx ignition has Unauthenticated Admin Account Creation via Onboarding Race Condition
来源: CVE Program / CVE List V5
Vulnerability Description
nginx ignition is a user interface for the nginx web server. Prior to version 2.41.1, `POST /api/users/onboarding/finish` is registered as anonymous (unauthenticated) and creates a user with full ReadWrite admin permissions. Because the handler uses a check-then-act (TOCTOU) pattern between the "onboarding already completed?" check and the user-creation write, with no atomic guard, a remote unauthenticated attacker who can reach an instance in its pre-onboarding state can create an administrator account for themselves — and concurrent requests can create multiple admin accounts in a single race. Version 2.41.1 patches the issue.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| lucasdillmann | nginx-ignition | < 2.41.1 | - |
|
二、漏洞 CVE-2026-61628 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-61628 其他参考 (1)
同批安全公告 · lucasdillmann · 2026-09-21 · 共 3 条
| CVE-2026-61629 | 7.5 HIGH | nginx ignition has ParseAcceptLanguage `_` separator bypass that enables ~75x CPU amplifi |
| CVE-2026-61630 | 4.2 MEDIUM | nginx ignition has TOTP Reuse During Validity Window |
IV. Related Vulnerabilities
V. Comments for CVE-2026-61628
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